Specific, dated, confident forecasts of catastrophe have a poor hit rate as a class. That is the narrow claim; the entries below are the evidence for it; and the closing section polices its limits, separating forecasts that were simply wrong from warnings that prevented the very thing they foretold. The list is a companion to The Ledger of Progress and does the opposite kind of work: where the ledger catalogued the ways life today is measurably better than it was, what follows catalogues forecasts of catastrophe or failure, made by named people in named venues, that did not come to pass as described. Each entry tries to give the actual claim, the person who made it, the date and where possible the venue, and what happened instead, rather than a vague gesture at doom that failed to arrive. Where an attribution is uncertain, the entry says so in plain terms, and a handful of the most famous "failed predictions" in circulation are included precisely because they appear never to have been made at all. A catalogue of forecasting errors that itself repeated fabricated quotations would be a poor teacher.
Read the list with the same caution its companion deserves, and more. A list of failed pessimistic predictions runs exactly the same risk as a list of only good news: it is a form of survivorship bias, assembled after the fact by someone who already knows how the story ended, drawing attention only to the forecasts that missed. It is easy, working backward from a comfortable present, to make foresight look more foolish than it was, and to forget that most confident forecasts, of any temperament, are wrong about their particulars even when they are right about their direction. It is also easy to be unfair to the forecasters themselves, many of whom reasoned carefully from the best evidence of their day and erred chiefly in underestimating how much the world would change around their premises.
Population, Food, and Resources
Thomas Malthus, in his 1798 An Essay on the Principle of Population, argued as a near mathematical certainty that population, growing geometrically, must always outrun food supply, growing only arithmetically, so that famine, disease, and misery would operate as permanent checks on human numbers. He did not, and given the technology of 1798 could not, reckon with the gains that mechanised, chemical, and later genetic agriculture would deliver, and food production per person has risen for more than two centuries even as population multiplied roughly eightfold. The pattern Malthus described had held for most of prior human history, which is why serious people took the essay seriously, and why its failure is so instructive.
William Stanley Jevons predicted in his 1865 book The Coal Question that Britain's industrial supremacy rested on cheap, accessible coal and would end as the best seams were worked out and prices climbed, raising costs across the whole economy. Deeper mining, imported fuels, and above all oil and natural gas, energy sources Jevons gave little weight, postponed the reckoning more or less indefinitely, and Britain's later relative economic decline, when it came, had different causes altogether, none of them a shortage of coal. The book remains a founding text of resource economics, and its other lasting idea, the Jevons paradox, which holds that efficiency gains tend to increase rather than reduce total consumption of a resource, has aged considerably better than the coal forecast itself.
Paul Ehrlich opened his 1968 book The Population Bomb with the flat declaration that the battle to feed all of humanity was over, and forecast that hundreds of millions of people would starve to death during the 1970s regardless of any crash programs embarked upon, with early editions citing expert opinion that India could not possibly feed the population it would carry by 1980. The Green Revolution, the package of high-yield seed varieties, irrigation, and fertiliser associated above all with the agronomist Norman Borlaug, instead lifted grain yields across South Asia so sharply that India achieved food self-sufficiency within a generation, and the India passage was quietly dropped from later editions of the book. Ehrlich's underlying worry was a serious argument taken seriously by serious people; his error lay chiefly in underestimating how fast agricultural science could move.
Ehrlich is also widely quoted, from remarks reported around 1969 to 1971, as offering even odds that England would not exist in the year 2000, and as forecasting that by that year the country would be a small group of impoverished islands inhabited by some seventy million hungry people. The precise wording varies across sources and should be treated with the usual caution owed to remarks reconstructed from speeches and interviews, but the substance is well attested, and England's population, income, and food supply all rose across the three decades in question. Ehrlich himself, decades later, maintained that his broader warnings about ecological limits remained essentially sound even where his timetable had failed.
William Vogt argued in his 1948 bestseller Road to Survival that the earth's carrying capacity was already being exceeded, and that catastrophic famine, ecological collapse, and social breakdown were close at hand unless population growth was sharply curtailed, in some regions by coercive means. The book sold in the millions and shaped a generation of environmental thinking, but the famines and mass die-offs it anticipated for the following decades did not occur at the scale or on the timetable described, chiefly because agricultural output rose faster than population did.
William and Paul Paddock's 1967 book on the coming world food crisis, whose original title named the year 1975 and carried an exclamation point, a small but telling index of the period's rhetorical temperature, argued that American food aid should be triaged on the model of battlefield medicine, with some nations, India prominent among them, classified as "can't-be-saved" and left to starve so that aid could be concentrated on countries judged likelier to survive. India not only avoided the famine the Paddocks treated as foregone but became agriculturally self-sufficient within roughly a decade of the book's publication, again substantially owing to the Green Revolution.
The United Nations World Food Conference, held in Rome in November 1974 against a backdrop of failed harvests and a doubling of world grain prices, produced a wave of official and journalistic warnings that mass starvation on a historic scale was essentially unavoidable within the following few years absent immediate coordinated action. World grain production instead recovered and expanded through the later 1970s and beyond, and the anticipated famine of the mid to late 1970s did not materialise on anything like the scale feared in Rome.
The Club of Rome's 1972 report The Limits to Growth, built on the World3 computer model derived from Jay Forrester's system dynamics work at MIT, concluded that continued exponential growth in population, industrial output, and resource use would strike hard physical limits within a century. In the popular press this was routinely flattened into claims that named resources, gold, silver, mercury, and petroleum among them, would be exhausted by specific dates in the 1980s and 1990s, and those exhaustion dates came and went without the predicted shortages. Fairness requires noting that the authors, the Norwegian co-author Jorgen Randers persistent among them, have always disputed that reading, insisting the report offered conditional scenarios rather than point predictions, and the deeper argument about growth and limits remains a live question on a much longer horizon than the newspaper versions allowed.
The economist Julian Simon wagered the biologist Paul Ehrlich in 1980 that the inflation-adjusted prices of five metals of Ehrlich's own choosing, chromium, copper, nickel, tin, and tungsten, would be lower in 1990 than in 1980, against Ehrlich's conviction that population-driven scarcity would drive them up. Simon won outright: every one of the five fell in real terms over the decade, on the strength of new discoveries, better extraction, and substitution. The wager has become the standard illustration of the argument that price signals and human ingenuity tend to outrun forecast depletion, though later analysts have fairly observed that over several other ten-year windows the same bet would have gone to Ehrlich, a reminder that a single decade proves less than the fame of the episode suggests.
Concern over "peak phosphorus," the idea that the mineable phosphate rock required for fertiliser would be effectively exhausted within decades, gained wide circulation in scientific and popular writing during the 2000s, with some frequently cited estimates suggesting reserves might not last beyond the middle of this century. Subsequent geological surveys identified far larger reserves than earlier estimates had assumed, concentrated heavily in Morocco, and improvements in recovery and recycling eased the anticipated shortage further, so that the specific exhaustion dates once discussed have receded rather than approached, which is the customary conduct of an exhaustion date.
Lester Brown, the founder of the Worldwatch Institute, issued a long series of warnings from the 1970s onward, several of them specifically dated and prominently published, that world grain production stood on the verge of falling permanently behind population growth, making chronic shortage and structurally rising real food prices a fixed condition of the decades ahead. Grain output instead continued to outpace population across most of the period, and real food prices, though volatile and given to sharp spikes, never entered the sustained structural climb Brown repeatedly forecast. He was diligent, quantitative, and wrong in the same direction many times in succession.
A recurring strand of 1970s and 1980s commentary held that the United States and other Western nations faced severe and largely unmanageable freshwater shortages by the end of the twentieth century, with some popular accounts suggesting that large cities of the American West could become effectively uninhabitable without radical desalination programs. Regional water stress has since emerged in earnest in parts of the American West and elsewhere, but no large city was rendered unviable within the forecast period, in part because of conservation, pricing reform, and infrastructure investment that the more fatalistic forecasts assumed would not occur.
Environment and Resource Catastrophe
Popular press coverage in the mid-1970s, most famously a Newsweek article of April 1975 titled "The Cooling World," suggested that meteorologists had detected a global cooling trend serious enough to threaten shortened growing seasons and possibly a new ice age within decades. This case demands particular care. A survey of the peer-reviewed climate literature of that decade, published in the Bulletin of the American Meteorological Society in 2008, found that papers projecting warming substantially outnumbered those projecting cooling, so the accurate statement is that popular journalism amplified a minority scientific position, not that 1970s climate science as a whole predicted an ice age. The failed forecast belongs chiefly to the newsstand, not the laboratory.
The first Earth Day, in April 1970, produced a cluster of dated forecasts that have been anthologised ever since. The ecologist Kenneth Watt is widely quoted, from a speech at Swarthmore College that year, as projecting that the world would be eleven degrees colder by 2000 and that the age of oil would be over by then; the Harvard biologist George Wald is quoted as giving civilisation fifteen to thirty years unless immediate action were taken, a span wide enough to be safe and narrow enough to alarm; and Life magazine reported in January 1970 that scientists had evidence that urban dwellers would need gas masks by the mid-1980s and that air pollution would halve the sunlight reaching the earth. These quotations circulate mainly through later retrospectives of uneven care, and should be read with that caveat, but none of the named outcomes occurred, and air quality in the cities of the wealthy world improved dramatically instead, London's air and the fish of the Thames among the standard exhibits, partly because of the legislation the alarm helped produce.
Paul Ehrlich's September 1969 essay for the magazine Ramparts, presented as a scenario of near-future ecological catastrophe but offered by its author as a picture of the sort of thing likely to happen, described pesticide-driven collapse rendering the oceans largely dead by the end of the 1970s, and suggested that air pollution could cut United States life expectancy to forty-two years by 1980. Ocean fisheries and urban air faced serious and in some respects worsening problems in the decades that followed, but the seas did not die on that schedule, and American life expectancy continued its long climb through the entire period in question.
Climate scientists and public figures speaking to the press during the 2000s and early 2010s offered a series of specific near-term dates for the first ice-free Arctic summer. The Cambridge polar researcher Peter Wadhams repeatedly suggested dates around 2015 or 2016 in newspaper interviews, and Al Gore was widely reported, in remarks at the 2009 Copenhagen climate conference drawing on modelling he attributed to the American researcher Wieslaw Maslowski, as saying there was a high chance the summer ice cap would be gone within five to seven years, a characterisation Maslowski himself resisted. Arctic summer sea ice has declined substantially and consistently across the satellite record, which is settled observation and a legitimate cause for concern, but no ice-free summer had occurred by any of the dates offered, a pattern in which the well-evidenced trend was right while the interview-room dates were premature.
Noel Brown, then director of the New York office of the United Nations Environment Programme, was quoted in a widely circulated Associated Press report of June 1989 as warning that entire nations could be wiped off the face of the earth by rising seas if global warming were not reversed by the year 2000, with governments having only a ten-year window to act. The year 2000 arrived without the inundation of any nation, and the deadline bore no relation to the pace at which sea level rise, though real, measurable, and continuing, has actually unfolded. The long-run concern about coastal vulnerability remains well founded; the ten-year clock attached to it in 1989 was not.
The Maldives has twice been given a public expiry date. A September 1988 Associated Press report quoted Maldivian officials and visiting experts to the effect that a gradual sea level rise could completely cover the archipelago within thirty years, a deadline that passed in 2018 with the islands intact, and in 2009 President Mohamed Nasheed held a cabinet meeting underwater to dramatise forecasts that the country might become uninhabitable within decades. The Maldives remains inhabited, has continued to build, and has even expanded land through reclamation, though its long-term exposure to rising seas is real and its governments have reasonably pursued adaptation and contingency plans.
The geophysicist M. King Hubbert correctly forecast in 1956 that conventional crude oil production in the continental United States would peak around 1970, a successful prediction recorded here in fairness. But followers who extended his curve-fitting method to the world fared worse: the Princeton geologist Kenneth Deffeyes wrote in the early 2000s that global production would peak in 2005, fixing the date, only half in jest, at Thanksgiving Day of that year, and the Association for the Study of Peak Oil circulated similar dates. Global production continued to rise well past them, driven chiefly by the North American shale boom, a technological shift the peak-oil school had not anticipated.
West German public discussion in the early and mid-1980s, under the resonant term Waldsterben, or forest death, a word that did a good deal of the forecasting on its own, forecast that acid rain would kill off large portions of the country's forests within a decade or two, with widely reported estimates that more than half of German forest area was already damaged and sliding toward terminal decline. Acid rain did real, measurable harm, and it prompted serious and largely successful emissions controls across Europe, but the wholesale death of the German forest did not occur, and forest cover has since stabilised and by some measures expanded. This is a case in which the alarm and the remedy cannot be cleanly separated, and the closing section returns to it.
Scientific and development literature on the African Sahel from the 1970s through the 1980s, written in the shadow of terrible droughts, held in its more alarmist versions that overgrazing and poor land use had set in motion an essentially irreversible southward march of the Sahara that would permanently destroy the region's agriculture. Satellite vegetation records assembled from the 1980s onward instead documented a substantial greening of large parts of the Sahel in subsequent decades, driven mainly by partial recovery in rainfall, complicating the irreversibility narrative even though land degradation remains a serious problem in parts of the region.
Warnings recurred around 2016 to 2019 that supply constraints on lithium, cobalt, and other battery minerals would place a hard ceiling on the growth of electric vehicles and grid storage within the following decade, with some industry analyses describing lithium availability as a binding constraint on the entire energy transition. New discoveries, rapidly expanded extraction, changed battery chemistries, and early recycling capacity instead kept pace with sharply rising demand through the period in question, repeating the pattern set by earlier exhaustion forecasts for coal, oil, and phosphate.
The United States has been officially running out of oil for more than a century. The federal Bureau of Mines was reported in 1914 as estimating that American reserves would last about ten years; the Interior Department offered similar figures in the late 1930s and again in the early 1950s; and versions of the ten-to-fifteen-year exhaustion estimate reappeared in each subsequent generation. The one reliably renewable resource proved to be the estimate. Each date passed as discovery and extraction technology outran depletion, and the United States entered the 2020s as the world's largest oil producer. The pattern has now held for a century, even though the underlying question of finite resources on a finite planet remains, on a long enough horizon, a real one.
In July 1971 the scientists S. I. Rasool and Stephen Schneider published a paper in Science calculating that a large sustained increase in atmospheric aerosols could cool the planet enough to trigger an ice age, a finding that drew wide press attention. Schneider himself later found that the model had understated warming from carbon dioxide, published a correction, and spent the rest of his career as a prominent voice on greenhouse warming, an honourable example of a scientist repairing his own forecast in public. The cooling scenario did not become the trend; it is included here because it shows how contested the direction of the climate signal looked to able scientists working with the tools of 1971.
The ecologist Norman Myers estimated in the mid-1990s that environmental degradation and climate change would create fifty million environmental refugees by 2010, a figure adopted in a widely circulated map associated with the United Nations Environment Programme in 2005. When 2010 arrived without any such flow, and journalists observed that population in several of the map's most endangered zones had in fact grown, the map was quietly withdrawn. Displacement linked to drought, flood, and storm is real and may yet grow large, but the fifty-million-by-2010 figure stands as a caution against attaching round numbers and near dates to slow, entangled processes.
In July 2009 the Prince of Wales, now King Charles III, was widely reported as warning that the world had ninety-six months to avert irretrievable collapse of the climate and ecosystems, a deadline aligned with the "one hundred months" campaign launched by the New Economics Foundation the previous year. The ninety-six months elapsed in mid-2017 without the described point of no return being visibly crossed, and the prince continued campaigning past his own deadline. Warming itself continued exactly as the underlying science indicated. The trend was real; the countdown clock was theatre.
The Great Horse Manure Crisis of 1894 is routinely cited as history's favourite failed urban forecast: The Times of London is said to have predicted that within fifty years every street in the city would be buried under nine feet of manure. The figure was precise, which is always a bad sign. No one has produced the original article, and the quotation appears to be a later invention, so this entry is included as a flagged caution rather than a documented forecast. The kernel is real enough, since horse-drawn cities did face a mounting waste problem that contemporaries discussed with alarm, and the automobile dissolved it within two decades in a way no city planner of 1894 predicted. The lesson survives the fabrication; the citation does not.
Technology and Automation
John Maynard Keynes, in his 1930 essay "Economic Possibilities for our Grandchildren," coined the term technological unemployment for joblessness caused by labour-saving discovery outrunning the discovery of new uses for labour, and treated it as a serious affliction of his depression-era moment even while remaining optimistic about the century ahead. The permanent structural mass unemployment that some of his contemporaries feared from mechanisation never became a settled condition of industrial economies, though the narrower observation, that automation destroys particular jobs and trades and forces painful adjustment, has been at least partly correct in every decade since.
The Ad Hoc Committee on the Triple Revolution, a group of scientists, economists, and social critics, sent a memorandum to President Lyndon Johnson in March 1964 warning that a "cybernation revolution" of computers and automated machinery was about to sever the link between work and income and eliminate the need for most human labour outright, and urged a guaranteed income to cope with the permanent unemployment it treated as already settled. Employment in the United States instead grew for decades as computerisation advanced, and the forecast severing did not occur, though the memorandum's underlying question about how automation reshapes labour has never gone away and was asked again, in nearly identical terms, about artificial intelligence sixty years later.
Dionysius Lardner, the Victorian populariser of science, is commonly quoted as having warned that rail travel at high speed was impossible because passengers, unable to breathe, would die of asphyxia; no reliable source for that remark has ever been found, and it should be treated as apocryphal. What Lardner demonstrably did claim, in lectures of the mid-1830s, was that a steamship could never carry enough coal to cross the Atlantic directly to New York, a calculation overtaken within two years when the Sirius and the Great Western both made the crossing in April 1838. One documented failure and one fabricated one, attached to the same man, make him a compact lesson in how this genre must be handled.
On the ninth of October 1903, the New York Times published an editorial, "Flying Machines Which Do Not Fly," estimating that a machine that really flew might be evolved by the combined and continuous efforts of mathematicians and mechanics in from one million to ten million years. The Wright brothers flew at Kitty Hawk sixty-nine days later. Wilbur Wright, for his part, told an audience in 1908 that in 1901 he had confessed to his brother Orville his belief that man would not fly for fifty years, proof that the pioneers themselves were not immune to the error.
Lord Kelvin, then the most eminent physicist in Britain, declined an invitation to join the Aeronautical Society in 1896 with a letter stating that he had not the smallest molecule of faith in aerial navigation other than ballooning, a unit of measurement only a physicist would reach for, and that he would not care to be a member of the society. Powered heavier-than-air flight followed within eight years of the letter, and within seven decades passengers were crossing oceans in machines Kelvin had declared himself unable to believe in.
A New York Times editorial of January 1920 ridiculed the rocket pioneer Robert Goddard's proposal that a rocket could function in the vacuum of space, asserting that he seemed to lack the knowledge ladled out daily in high schools, since a rocket would have nothing to push against. The physics was the editorialist's error, not Goddard's, and the paper published a correction on the seventeenth of July 1969, while Apollo 11 was on its way to the moon, noting dryly that it was now definitely established that a rocket can function in a vacuum and that the Times regretted the error.
Ernest Rutherford, the discoverer of the atomic nucleus, told the British Association meeting at Leicester in September 1933 that anyone who looked for a source of power in the transformation of atoms was talking moonshine, a remark reported in The Times the next morning; the physicist Leo Szilard, by his own account irritated by the report, conceived the idea of the nuclear chain reaction within days, by his own account while waiting for a traffic light to change on a London street. Robert Millikan, the American Nobel laureate, is commonly quoted from 1928 remarks as saying there was no likelihood that man could ever tap the power of the atom. The first controlled chain reaction ran in 1942, and the first power stations followed within a generation.
Richard Woolley, arriving in Britain in January 1956 to take up the post of Astronomer Royal, was widely reported as telling the press that space travel was utter bilge. Sputnik flew in October 1957, Gagarin in 1961, and men walked on the moon within thirteen years of the remark. Woolley later protested that he had meant chiefly to dismiss the near-term economics of manned space flight, which is worth recording, but the phrase had already entered the anthology of confident dismissals and, on its plain reading, had failed within twenty months.
William Preece, chief engineer of the British Post Office, told a House of Commons committee in testimony commonly dated to 1878 or 1879 words to the effect that the Americans had need of the telephone but Britain did not, having a superabundance of messenger boys. The polished aphorism as usually quoted is a tidied version of committee testimony and should be treated as such, but the substance of the judgment is documented, and the telephone proceeded to conquer Britain along with everywhere else, messenger boys notwithstanding. The boys themselves were at no point consulted.
An internal Western Union memorandum of 1876 is endlessly quoted as concluding that the telephone had too many shortcomings to be seriously considered as a means of communication and was inherently of no value to the company. No original of this memorandum has ever been produced, its wording varies suspiciously from telling to telling, and historians of the company treat it as almost certainly apocryphal. It is included here as a flagged caution: Western Union did in fact decline to buy Bell's patent, a decision it soon regretted, but the famous document recording the reasoning appears to be an invention. Western Union thus occupies the unusual position of being remembered for the reasoning of a memorandum it never produced.
Thomas Watson of IBM is very widely quoted as having said, around 1943, that there was a world market for maybe five computers, the classic specimen of failed technological foresight. The attribution is disputed by historians of computing, no reliable contemporary source has been found, and the likeliest origin is a garbled retelling of a 1953 shareholder meeting at which IBM reported that a cautious sales forecast for one early machine had been happily exceeded. It may be the most repeated failed prediction in circulation, and it was quite possibly never made.
Charles Duell, Commissioner of the United States Patent Office, is famously supposed to have said in 1899 that everything that can be invented has been invented. The line is a fabrication, traceable to a joke printed in Punch's Almanack for 1899, and Duell himself said close to the opposite, remarking in 1902 that all previous advances would appear totally insignificant beside those the new century would witness. Correction after correction has failed to kill the quotation, which says something uncomfortable about the appetite this genre feeds. Punch, at least, was joking on purpose.
Darryl Zanuck, the head of Twentieth Century Fox, is commonly quoted as predicting in 1946 that television would fail to hold any market it captured after the first six months, because people would soon tire of staring at a plywood box every night. The sourcing is thin, resting on later compilations rather than a contemporary record, and the quotation should be treated as commonly attributed rather than established. Whatever Zanuck actually said, the Hollywood studios of the late 1940s demonstrably underestimated television, which reached the large majority of American households within a decade. The nightly staring materialised as predicted. The tiring did not.
Ken Olsen, the founder of Digital Equipment Corporation, told the World Future Society convention in 1977 that there was no reason for any individual to have a computer in his home. Olsen and his defenders have long maintained that he was speaking of centralised computers controlling the whole household, not of the personal computer, and the fuller transcript lends the defence some support. The context complicates but does not erase the judgment, for DEC itself then badly misjudged the personal computer market, and the company that missed it was eventually bought by one that had not.
Bill Gates is persistently quoted as having said, around 1981, that six hundred forty kilobytes of memory ought to be enough for anybody. Gates has repeatedly and specifically denied saying it, no contemporary source has ever surfaced, and the quotation should be classed with the Watson and Duell fabrications. The memory limit itself was real, a design constraint of the early IBM personal computer that programmers spent a decade working around, which is presumably why the invented remark found such a ready audience. Gates has now been denying the remark for considerably longer than the limit itself lasted.
Decca Records auditioned the Beatles on New Year's Day 1962 and turned them down, with the label's Dick Rowe reported by the band's manager Brian Epstein as explaining that guitar groups were on the way out and that the Beatles had no future in show business. Rowe disputed Epstein's account of the wording for the rest of his life, so the sentence should carry a flag, but the decision itself is a matter of record, and the group Decca declined became the best-selling act in the history of recorded music. The label signed Brian Poole and the Tremeloes instead, who had auditioned the same day and had the advantage of living nearer to London. Rowe, to his credit, signed the Rolling Stones the following year.
Clifford Stoll, an astronomer and early inhabitant of the internet, published a widely read essay in Newsweek in February 1995, printed under the headline "The Internet? Bah," arguing that visions of online commerce, digital newspapers, and virtual communities were hype, and doubting specifically that people would ever shop, read the news, or conduct serious business over networks in preference to established channels. Within two decades the network had absorbed most of those activities, and Stoll himself acknowledged, with good humour, how badly the essay had aged. His scepticism was at least his own: he was an expert user warning against enthusiasm, not an outsider dismissing what he had never touched.
Paul Krugman wrote in a 1998 piece for Red Herring magazine that by 2005 or so it would become clear that the internet's effect on the economy had been no greater than the fax machine's, reasoning that most people had nothing to say to each other and that the growth of the network would slow as the easily connected were exhausted. The internet instead became the substrate of a large fraction of economic life, much of it consisting of people with nothing in particular to say to each other, so that the premise held up rather better than the conclusion, and Krugman has since cited the remark himself, noting that it was written for a feature of deliberately provocative predictions but accepting it as evidence of how badly even careful economists can misjudge a new technology. Economists who quote their own worst calls back at themselves are rare.
Robert Metcalfe, the inventor of Ethernet, predicted in his InfoWorld column of December 1995 that the internet would suffer a catastrophic collapse during 1996, coining the word "gigalapse" for the failure of capacity to keep up with traffic, and promised to eat his words if proved wrong. The collapse never came, and at an international web conference in 1997 Metcalfe put a printed copy of the column through a blender with water and drank the result on stage. He remains the rare forecaster to have honoured a failed prediction publicly, cheerfully, and literally.
Business Week reported in June 1975 on the coming of the paperless office, forecasting that within roughly fifteen to twenty years most business record-keeping and correspondence would be electronic and office paper consumption would fall sharply. Paper consumption in American offices instead rose for about two more decades, peaking only around the turn of the century as photocopiers and laser printers proliferated alongside, rather than instead of, the new digital systems, before the decline finally arrived a full generation behind schedule.
Time magazine's 1966 essay on the futurists conceded that remote shopping through home terminals was entirely feasible technically, and then predicted it would flop, because women, the magazine explained, like to get out of the house, like to handle the merchandise, and like to be able to change their minds. Online retail grew from novelty to one of the dominant channels of consumer commerce within three decades, a clean specimen of correctly judged feasibility paired with confidently mistaken psychology.
Steve Ballmer, then chief executive of Microsoft, told USA Today in April 2007 that there was no chance the iPhone would get any significant market share, no chance, allowing that it might make Apple a little money but insisting the device's five-hundred-dollar price condemned it. He was laughing as he said it, a detail the footage preserves. The iPhone went on to capture, by most industry analyses, the majority of the profits in the entire global handset business, and Ballmer has since acknowledged the misjudgment. Set beside the fabricated quotations elsewhere in this section, the remark shows that the genre needs no inventions; the documented cases are strong enough.
The Y2K, or millennium bug, alarm of 1998 and 1999 held that computer systems storing years as two digits would misread the year 2000 as 1900, with some public warnings suggesting power grids, banking systems, and aircraft could be disrupted at the stroke of midnight. This case must be handled with particular care, because it sits closer to successful prevention than to false alarm: the defect was real and well understood by the engineers who raised it, remediation spending worldwide was commonly estimated in the hundreds of billions of dollars precisely because informed professionals judged the risk serious, and the quiet rollover of the first of January 2000 is at least in substantial part the story of a problem fixed in advance. The closing section returns to the distinction.
The switching on of the Large Hadron Collider at CERN in 2008 was attended, in parts of the press and among a small number of critics, by warnings that its collisions might create a stable microscopic black hole or other exotic object capable of destroying the earth, concerns pressed far enough to produce lawsuits in the United States and Europe seeking to halt the experiment, though it was never explained what remedy a court could order once the planet had gone. The physics community's assessment, that any such object would evaporate essentially instantly under well established theory, and that cosmic rays had been performing higher-energy collisions on the earth for billions of years without incident, has been borne out by more than fifteen years of uneventful operation since.
Carl Benedikt Frey and Michael Osborne of Oxford published a 2013 study estimating that about forty-seven percent of United States employment was in occupations technically susceptible to automation over the following decade or two, a figure the press converted almost universally into the forecast that half of American jobs would soon disappear. The study measured susceptibility, not predicted job losses, a distinction its authors stated and the headlines dropped, and the decade that followed brought historically low American unemployment rather than mass displacement, even as automation continued to reshape particular occupations. What happened between the careful paper and the confident headline is the whole of it.
Economics and Geopolitics
Paul Samuelson's Economics, the standard introductory textbook for generations of American students, carried from its 1961 edition a chart projecting that Soviet national output might overtake that of the United States, initially somewhere in the mid-1980s to late 1990s. As successive editions appeared through the 1970s and 1980s, the projected crossover date was moved quietly outward, and the chart eventually disappeared from the book altogether, not long before the Soviet economy itself disappeared. Scholars who later traced the chart through the editions made it a set piece in the study of forecasting error: a mistaken projection surviving in an authoritative reference for two decades through revision rather than retraction.
Ezra Vogel's 1979 book Japan as Number One, and the wave of commentary that followed it through the 1980s, forecast that Japan's economy, powered by superior management and industrial policy, would overtake the American economy within a matter of years, with popular accounts foreseeing Japanese ownership of large swaths of American industry, a fear seemingly confirmed when Mitsubishi Estate bought control of Rockefeller Center and Sony bought Columbia Pictures, both in 1989. Japan's asset bubble burst in the early 1990s, the economy entered what became known as the Lost Decades, and Rockefeller Center's Japanese owners surrendered the property at a heavy loss within six years of buying it.
Japan's Ministry of International Trade and Industry launched the Fifth Generation Computer Systems project in 1982, a ten-year national program to leap ahead of the world in artificial intelligence, and American observers, most prominently Edward Feigenbaum and Pamela McCorduck in their 1983 book The Fifth Generation, warned that the United States was about to lose its leadership of computing itself, as it was then losing memory-chip manufacturing. The project closed on schedule in 1992 without producing the promised machines, Japanese firms did not come to dominate computing or software, and the American industry the warnings had written off produced the personal computer, the workstation, and the internet economy within the forecast window. The chip anxiety had more substance for a time; the general forecast of Japanese computational supremacy did not.
Ross Perot warned during the 1992 presidential campaign, in a phrase repeated in the debates of 1992 and the NAFTA debate of 1993, that the North American Free Trade Agreement would produce a giant sucking sound of American jobs going south to Mexico. Economists still debate NAFTA's net effect with reason, and particular manufacturing communities suffered real, lasting losses that should not be talked away, but the immediate and overwhelming exodus Perot described did not occur in the years after the agreement took effect in 1994; American employment grew strongly through the rest of the decade.
In November 2010 a group of prominent economists, investors, and commentators, among them Niall Ferguson, John Taylor, and Cliff Asness, published an open letter to Federal Reserve chairman Ben Bernanke warning that the second round of large-scale asset purchases risked currency debasement and inflation. Inflation instead ran below the Federal Reserve's own target for most of the following decade, and the inflation that finally arrived in 2021 and 2022 is attributed by most economists chiefly to pandemic-era supply disruption and fiscal stimulus rather than to the monetary expansion of 2010. Several signatories were later pressed on the letter and declined to retract it, arguing the risk had been real even though the outcome was benign, a defence the reader may weigh.
The financial commentator Peter Schiff, among others, forecast repeatedly between roughly 2009 and 2015 that post-crisis central bank balance sheet expansion would produce runaway inflation or an outright collapse of the dollar within a few years. Neither arrived on any of the stated timelines, and the dollar strengthened against most major currencies over much of the period. Schiff had earned credibility by warning before 2008 of the housing collapse. Does one right call buy the next? A correct pessimist is not thereby granted a correct model of the next decade.
The economist Ravi Batra's 1987 book The Great Depression of 1990 reached the top of the New York Times bestseller list with the forecast, presented as the working of long historical cycles, that a depression exceeding that of the 1930s would begin around 1990. The 1990s instead delivered one of the longest peacetime expansions in American history. Batra published follow-up volumes adjusting the thesis, but the named year had been the book's selling point, and the named year failed.
Harry Figgie's 1992 bestseller Bankruptcy 1995 forecast that compounding federal deficits would drive the United States government into effective default around 1995, complete with charts of the approaching wall. The mid-1990s instead brought deficit reduction, and by 1998 the federal budget was in surplus for the first time in a generation. Federal debt has since grown far beyond the levels that alarmed Figgie, without the forecast bankruptcy, which suggests less that debt never matters than that the timing of fiscal reckonings resists the precision his title claimed.
Business Week's cover story of August 1979, "The Death of Equities," argued that a decade of inflation had permanently soured Americans on the stock market as a savings vehicle and described the eclipse of equities as a near-permanent condition of the economy. One of the longest bull markets in the history of American equities began within three years of publication, and the magazine itself later revisited the cover with rueful good grace. The piece has become the standard exhibit for the proposition that maximum pessimism in the financial press is worth reading as a contrarian signal.
Financial commentary during the European sovereign debt crisis of 2010 to 2012 widely treated the breakup of the eurozone, and specifically Greece's exit, as probable within a short and defined window; the Citigroup economists who coined the term Grexit at one point in 2012 put the likelihood of Greek departure within about eighteen months at ninety percent. Greece endured a brutal depression and repeated brinkmanship, which no fair account can minimise, but it did not leave the currency, no member state has, and the eurozone emerged from the crisis intact and subsequently enlarged.
Ahead of the euro's 1999 launch, distinguished economists argued that a monetary union spanning economies as different as Germany's and Greece's, lacking fiscal union or internal exchange rates, could not endure. Milton Friedman is widely quoted as predicting the euro would not survive its first major economic crisis, and Martin Feldstein argued in Foreign Affairs in 1997 that monetary union could heighten conflict within Europe rather than reduce it. The euro then survived precisely the kind of crisis Friedman had specified, in 2010 to 2012, and remains the world's second currency after more than a quarter century, though the sceptics correctly identified the structural weaknesses that the crisis exposed; they erred on the resilience, not the diagnosis.
Gordon Chang's 2001 book The Coming Collapse of China forecast that the strains of World Trade Organisation membership, pressing on a banking system stuffed with bad loans, would bring down the Communist Party and the Chinese state as then constituted within five to ten years. When the deadline lapsed, Chang wrote in Foreign Policy at the end of 2011 that he had been wrong only about the date, and invited readers to bet on collapse in 2012 instead. That date passed as well. China's economy grew to the world's second largest across the forecast period, though the debt and banking questions Chang raised remain seriously debated, and remain open.
HM Treasury's analysis published ahead of the June 2016 referendum on European Union membership warned that a vote to leave would push the United Kingdom into an immediate technical recession within two years, cost around half a million jobs in the short term, and likely require an emergency budget, with a sharp fall in house prices to follow. No immediate recession occurred in the two years after the vote, employment rose, house prices did not collapse on the forecast scale, and no emergency budget was introduced, even though economists continue, with justice, to debate the referendum's slower long-run costs to trade, investment, and growth. Which is at issue here, the short-term forecast or the long-run question? Only the first.
Commentary after the oil embargo of 1973 and 1974, renewed after the second oil shock of 1979, held in its darker strands that Western industrial economies faced permanent structural decline in living standards as the era of cheap energy closed for good. The 1970s did bring a miserable stagflation, no small thing, but Western economies resumed substantial growth through the 1980s and 1990s, oil prices collapsed in 1986, and the permanent decline forecast at the time of the embargoes did not occur.
The historian Paul Kennedy's 1987 book The Rise and Fall of the Great Powers argued, through the concept of imperial overstretch, that the United States was entering relative decline as military commitments outran the economic base sustaining them, on the pattern of Habsburg Spain and Edwardian Britain. Within four years it was the Soviet Union that had collapsed, a possibility the pattern had not allowed for, and the United States entered a decade of expansion and unchallenged primacy that contemporaries called the unipolar moment. Kennedy's long-horizon argument about the burdens of empire remains seriously debated, and may yet prove out on a longer clock; the near-term trajectory the book was read as forecasting did not arrive on schedule.
Warnings after the Mexican peso crisis of December 1994, the so-called Tequila Crisis, held that contagion would spread through Latin America and produce a prolonged region-wide depression on the model of the 1980s debt crisis. Mexico's downturn was sharp but comparatively brief, aided by a large and controversial American-led support package, contagion effects elsewhere proved mostly containable, and the forecast decade of regional depression did not materialise.
Mainstream economic forecasting through the mid-2000s, ahead of the 2008 financial crisis, ran overwhelmingly toward continued stability, with central bank and private projections alike missing the housing-driven collapse almost entirely. This entry records a failure of optimism, not pessimism. The largest forecasting failure of the early twenty-first century ran in the opposite direction from most of the entries surrounding it, and the handful of pessimists who called it were dismissed. The closing section names them.
Planning estimates around the 2003 invasion of Iraq forecast a short conflict with modest occupation costs; the deputy defence secretary Paul Wolfowitz told Congress in March 2003 that Iraq could really finance its own reconstruction, and relatively soon, while the White House economic adviser Lawrence Lindsey had been publicly repudiated months earlier for suggesting the war might cost as much as two hundred billion dollars, a figure his critics called far too high. The occupation lasted years, direct expenditure ran to hundreds of billions of dollars and by broader accountings well past a trillion, and Iraqi oil revenue never approached covering reconstruction on the timeline suggested. Lindsey's disgraced estimate proved, if anything, an underestimate.
The novelist and scientist C. P. Snow told the American Association for the Advancement of Science in December 1960, in an address later printed in Science, that unless the nuclear powers restricted their arsenals, some of the bombs would go off within at most ten years, saying that he spoke as responsibly as he could and that this was a certainty. No nuclear weapon has been used in war since 1945. Snow's certainty failed, but the entry should be read alongside the closing section's discussion of self-negating prophecy, since the machinery of treaties, hotlines, and deterrence built partly by people who shared his fear is part of why it failed; the Cuban crisis of 1962 showed how near the margin ran.
Health and Pandemics
The 2003 outbreak of Severe Acute Respiratory Syndrome, or SARS, prompted warnings in parts of the press of a potential pandemic killing millions worldwide if containment failed. Containment did not fail: quarantine, travel screening, and contact tracing ended the outbreak within about eight months at a global toll most counts place under nine hundred deaths. The worst forecasts were not so much wrong as acted upon, and this entry, like Y2K, belongs partly to the category of warnings that helped prevent their own fulfilment.
After a soldier at Fort Dix died of a novel swine influenza in February 1976, federal health officials warned that the virus could return that winter on the scale of 1918, and President Ford announced a program to vaccinate every American, which reached roughly forty-five million people by December. The pandemic never came; the virus did not spread beyond the base, and the vaccination campaign was suspended after cases of Guillain-Barré syndrome were linked to the vaccine. The episode has been studied ever since as the standard case of a defensible worst-case judgment, made in good faith under time pressure, that public retellings hardened into a prediction and that events then falsified.
The World Health Organization's declaration of a pandemic for the H1N1 swine flu in June 2009 was accompanied by public commentary invoking the 1918 influenza and its tens of millions of deaths as the relevant comparison. Later epidemiological estimates placed the actual global toll somewhere between roughly one hundred fifty thousand and five hundred seventy thousand deaths, a serious loss but two orders of magnitude below the invoked precedent, and the virus proved unusually mild for a pandemic strain. A rapidly produced vaccine and the accumulated machinery of influenza surveillance deserve part of the credit, and the gap between the worst commentary and the outcome deserves the rest.
The H5N1 avian influenza, circulating in birds since the 1990s and killing a high proportion of the humans it infected, drew repeated warnings through the 2000s, from officials and researchers of standing, that a mutation enabling efficient human transmission could produce a pandemic rivalling or exceeding 1918, with worst-case figures in the tens of millions of deaths quoted in respectable venues. Two decades on, H5N1 had still not achieved sustained human-to-human transmission despite circulating ever more widely in birds and lately in mammals. The fair verdict is not that the warnings were wrong but that they were conditional and remain unresolved. A plausible catastrophe can stay plausible for a very long time without arriving.
The United States Centers for Disease Control published modelling in September 2014, at the height of the West African Ebola outbreak, projecting that without additional intervention Liberia and Sierra Leone could suffer as many as 1.4 million cases by the following January. The outbreak's final toll, across all affected countries through 2016, was roughly twenty-eight thousand cases and eleven thousand deaths, devastating in itself but a small fraction of the modelled figure, substantially because the model's stated purpose was to justify the international intervention that then took place and bent the curve. The 1.4 million figure was a conditional scenario doing persuasive work, and it succeeded; treating it afterward as a failed prediction misreads what it was for.
American press coverage in the mid-1980s warned that AIDS was poised to spread through the general heterosexual population of the United States and Western Europe at the pace then visible in parts of Africa; Oprah Winfrey told her television audience in February 1987, citing research projections, that one in five heterosexuals could be dead from AIDS by 1990. In North America and Western Europe the epidemic instead remained heavily concentrated in specific populations, and nothing close to the one-in-five figure occurred anywhere in the West. Globally this was no false alarm: in parts of sub-Saharan Africa the generalised catastrophe arrived in full, meeting or exceeding the worst fears of the 1980s, and AIDS stands among the deadliest pandemics in modern history. The failed forecast concerned where, not whether.
Early epidemiological modelling in the first weeks of COVID-19 in 2020, most prominently the Imperial College London report of March 2020 projecting on the order of 2.2 million American deaths in the complete absence of mitigation, was treated in parts of the public conversation as an unconditional forecast. The figures were explicitly conditional, describing an unmitigated scenario their authors did not expect to occur, and the mitigation that followed makes the actual toll, itself immense, neither a confirmation nor a refutation of the scenario. This case belongs to the self-negating and conditional category discussed in the closing section, though almost nobody filed it there at the time.
Public commentary around the anthrax letters of 2001, and the broader bioterrorism alarm of the early 2000s, warned that a mass-casualty biological attack on a major American city was a near-term likelihood demanding urgent civil defence preparation. No attack on that scale occurred in the following two decades. The vulnerabilities identified were real, and the surveillance and biodefence investment the warnings prompted may itself have lowered the risk, but the specific near-term likelihood, as stated, did not materialise.
Warnings issued periodically from the 1990s onward that antibiotic-resistant bacteria would, within a decade or two, make common infections routinely untreatable in the hospitals of wealthy countries, returning them to pre-antibiotic mortality, did not come true in that generalised, near-term form. Fairness points hard in the other direction here: antimicrobial resistance is real, worsening by most expert assessments, and already responsible by recent estimates for over a million deaths worldwide each year. The entry records only that the most dramatic near-term framing missed its dates, not that the underlying alarm was misplaced; of all the warnings collected here, this is among the likeliest to be vindicated late.
At the height of Britain's mad cow disease crisis in the 1990s, scientific and press estimates of the eventual human toll from variant Creutzfeldt-Jakob disease, contracted through beef eaten in the 1980s, ranged from the low hundreds to figures in the tens or even hundreds of thousands, the upper bounds reflecting honest uncertainty about a disease with an incubation period measured in decades. The confirmed toll came to a few hundred cases worldwide, with the United Kingdom total under two hundred. The wide published ranges were labelled as ranges, which is to the forecasters' credit; the coverage that quoted only their upper ends was another matter.
Miscellaneous
The Economist's cover story of May 2000 labelled Africa "The Hopeless Continent," describing a self-perpetuating cycle of war, corruption, and economic failure with little near-term prospect of change. In December 2011 the same magazine ran a cover titled "Africa Rising," citing a decade of accelerated growth across much of the continent, and explicitly revisited its earlier verdict. Whatever one makes of either cover, the pair constitutes a rare case of a major publication correcting its own pessimism in print, at full size, rather than letting the matter drop.
Population projections issued in the 1960s and 1970s, extrapolating then-current fertility, showed world population climbing toward fifteen billion, twenty billion, or in some widely cited variants considerably more before any stabilisation. Fertility instead fell faster than nearly anyone projected, across almost every region and often ahead of prosperity, and current United Nations median projections show world population peaking within this century somewhere in the vicinity of ten to eleven billion before beginning a slow decline. The demographers' standard defence, that projections are extrapolations rather than predictions, is fair, and applies with equal force to many other entries here.
American policy through the Vietnam era rested substantially on the domino theory, articulated by President Eisenhower at an April 1954 press conference and repeated by successive administrations: the fall of Vietnam to communism would topple the neighbouring states of Southeast Asia in sequence, Thailand, Malaysia, Indonesia, and the Philippines among them. Vietnam, Cambodia, and Laos did fall to communist governments by 1975, which honesty requires recording, but the wider cascade never followed, and every other state named in the theory remained outside communist control and mostly grew richer.
John F. Kennedy campaigned in 1960 on the missile gap, a supposed Soviet lead in intercontinental ballistic missiles that left the United States exposed, a claim resting on contemporary intelligence estimates and amplified throughout the press. Satellite reconnaissance and revised intelligence available soon after Kennedy took office established that the gap ran the other way, with the United States holding the substantial lead, and his own defence secretary conceded as much within weeks of taking office. The episode shows a forecast of catastrophe doing electoral work while the classified evidence against it accumulated.
Robert Kaplan's 1994 essay for The Atlantic, "The Coming Anarchy," forecast that scarcity, disease, overpopulation, and state collapse, observed most vividly in West Africa, would spread outward to overwhelm weak states across much of the world and increasingly unmake the international system by the early twenty-first century. Some of the particular crises Kaplan described did deepen, but the general anarchic unravelling did not occur on the scale or schedule the essay implied; several of his exemplary failed states, Sierra Leone among them, subsequently stabilised.
The radio broadcaster Harold Camping calculated from scripture that the Rapture would arrive in September 1994, and then, after revising his arithmetic, on the twenty-first of May 2011, with the world's final destruction to follow that October. Both dates passed without incident, and Camping, to his considerable credit as a forecaster if not as an exegete, then publicly renounced date-setting altogether, saying he had sinned in attempting it. He is one of the very few forecasters here to have retracted the method rather than merely rescheduling the event.
When astronomers announced in early 1910 that the earth would pass through the tail of Halley's Comet, and spectroscopy showed the tail contained cyanogen, the French astronomer Camille Flammarion was widely reported, notably via the New York Times, as suggesting the gas might impregnate the atmosphere and possibly snuff out all life on the planet. Entrepreneurs sold comet pills and sealed rooms did brisk business. The pills worked, in the sense that no purchaser died of the comet. The earth passed through the tail on the night of the eighteenth to nineteenth of May 1910 without measurable effect, the tail's gases being too diffuse by many orders of magnitude to matter, as most astronomers had said at the time.
The astrophysicist John Gribbin and Stephen Plagemann predicted in their 1974 book The Jupiter Effect that an alignment of the planets in March 1982 would, through tidal and solar effects, trigger a catastrophic earthquake on the San Andreas fault, with Los Angeles the likeliest casualty. March 1982 arrived, the planets aligned as scheduled, and Los Angeles stayed where it was. The underlying mechanism had already been rejected by most geophysicists, and Gribbin later repudiated the book plainly, calling it the biggest mistake of his career, another of the record's rare full retractions.
Planning documents and commentary of the early 1970s, extrapolating the air-travel boom of the previous decade, forecast that supersonic aircraft on the model of Concorde would dominate long-haul aviation by the century's end, relegating subsonic jets to a secondary role; some manufacturers projected markets of hundreds of airframes, a projection produced by the people who would be building them. Concorde's fleet never exceeded a handful of aircraft in scheduled service, fuel costs, sonic-boom regulation, and ticket economics confined it to a luxury niche until retirement in 2003, and no successor entered commercial service in the following two decades.
Predictions common in the 1970s and 1980s held that the urbanisation of the developing world would produce ungovernable megacities, with specific forecasts that cities like Mexico City or Calcutta would be effectively unadministrable disaster zones by the year 2000 given prevailing growth rates. Those cities faced, and in some respects still face, severe strains of infrastructure and governance that ought not to be minimised, but administrative collapse did not arrive on schedule, city populations grew more slowly than the extrapolations assumed, and municipal government, however imperfect, continued to function.
Boutros Boutros-Ghali, then Egypt's minister of state for foreign affairs, was widely quoted in the mid-1980s as saying the next war in the region would be fought over the waters of the Nile, not politics, and Ismail Serageldin of the World Bank predicted in 1995 that if the wars of the twentieth century were fought over oil, the wars of the twenty-first would be fought over water. Decades on, no major interstate war has been fought principally over water, in the Middle East or elsewhere; hydrological disputes have tended, on the scholarly record, to produce treaties more often than battles, though water scarcity remains a real and worsening source of tension in several of the basins the warnings named.
Commentary surrounding India's state of emergency of 1975 to 1977, during which the government conducted a mass forced-sterilisation campaign justified partly by warnings that population growth would soon overwhelm the country's capacity to feed and govern itself, treated large-scale coercive population control as a necessity that other developing nations would shortly be forced to adopt. Most developing countries instead achieved deep fertility declines over the following decades by voluntary means, chiefly the education of girls, urbanisation, and access to family planning, and the coercive model was abandoned rather than imitated.
Around the launch of the satellite telephone networks of the late 1990s, Iridium prominent among them, industry commentary forecast that satellite handsets would overtake ground-based cellular networks within a decade on the strength of their global coverage. Terrestrial cellular instead spread faster and cheaper than almost anyone had projected, Iridium filed for bankruptcy in August 1999, roughly nine months after beginning commercial service, well inside the decade allowed for its triumph, and satellite telephony settled into a narrow niche serving ships, deserts, and expeditions.
Prominent forecasts made shortly after the attacks of September 2001 predicted that mass-casualty terrorism on a similar scale would become a routine, recurring feature of life in major Western cities over the following decade. Terrorism remained a real and sometimes deadly threat, and attacks in Madrid, London, and elsewhere took hundreds of lives, but nothing at the scale of September 11 recurred in the West during the period, and the forecast pattern of routine catastrophe did not establish itself. How much of that is owed to the enormous counterterrorism apparatus built after 2001 is a question the closing section's categories are made for.
Commentary after the Asian financial crisis of 1997 and 1998, in its more pessimistic strands, forecast that the region's celebrated growth model was broken and that a prolonged stagnation on the Japanese pattern would follow across the affected economies. South Korea, the most closely watched casualty, returned to growth within two years, most of the other affected economies recovered nearly as fast, and the region resumed its convergence with the rich world, though the crisis left lasting marks on financial regulation and on the enormous foreign-exchange reserves Asian governments have held ever since, an insurance policy purchased against the repetition the pessimists feared.
Herman Kahn and Anthony Wiener's 1967 book The Year 2000, among the most systematic forecasting exercises ever attempted, scored notable hits, anticipating something like the personal computer and the fax among its hundred technical possibilities, and also confidently expected widespread commercial weather control, large-scale ocean farming, and interplanetary travel by the century's end. Mockery would be misplaced. The same disciplined document got some futures substantially right and others entirely wrong, which is roughly the best that systematic foresight has ever achieved, and a fair benchmark against which to measure the confident single-outcome forecasts that fill the rest of the list.
What the List Does and Does Not Show
The list is exactly as vulnerable to survivorship bias as a list of only good news would be, as was said at the outset. It was assembled by someone who already knows the ending, working backward through a great deal of archival noise to find the specific claims that turned out to be wrong, which is not a demanding kind of search, while passing over the pessimistic forecasts of the same eras that turned out to be right, the ones too vague ever to be checked, and the ones so universally believed that nobody thought to write them down as predictions at all. A patient researcher could compile an equally long list running the other way, filled with confident assurances that the housing market was sound, that the Titanic was unsinkable, that the war would be over by Christmas, and both lists would be true, and neither would settle anything about whether pessimism or optimism deserves more weight. What the list can defend is narrower: that specific, dated, confidently stated forecasts of catastrophe, the kind that name a mechanism, a magnitude, and a year, have missed with real frequency across a very wide range of subjects and a very long span of time. That is worth knowing. It is not the same as knowing that worry is wasted, and the two must not be allowed to blur.
Were all of these forecasts failures in the same sense? Several entries above have been straining against a second distinction. Some forecasts here were simply wrong: the model failed to describe the world, and no human response entered into it. Malthus did not foresee what agricultural science would do to his arithmetic; Samuelson's chart did not foresee that the Soviet economy would collapse from within rather than overtake its rival; the peak-oil school did not foresee hydraulic fracturing; Ravi Batra's cycles delivered a boom where he had printed a depression. But other entries describe something categorically different: a warning taken seriously enough, by people with the authority and resources to act, that action was undertaken precisely to prevent the forecast outcome, and the outcome then failed to occur. The Y2K remediation is the cleanest case in the record. Engineers who judged the two-digit date defect to be real spent years and enormous sums repairing it, and the quiet rollover of the first of January 2000 is substantially a story of prevention succeeding, not of alarm exposed as baseless. The Montreal Protocol is the grandest case of all, though it appears above only by its absence: the ozone catastrophe forecast in the 1970s and 1980s never arrived chiefly because the world banned the chemicals causing it, which is why no entry above records a "failed" ozone prediction. The CDC's Ebola model of 2014 stated on its face that its worst figure described the course of the epidemic without the intervention the model existed to justify; the intervention came, and the figure was averted. SARS containment, post-2001 counterterrorism, acid rain policy, and the clean air and water legislation of the 1970s all sit in the same territory, where warning, action, and outcome are so entangled that no one can say with certainty how much of the forecast disaster was ever going to happen and how much was headed off. A prediction that was mistaken and a prophecy that defeated itself are different intellectual events, and a reader who files them under the same heading has learned the wrong lesson from both. The worst practical consequence of confusing them even has a name: the preparedness paradox, in which every catastrophe successfully prevented becomes retrospective evidence that the warning was hysterical, and the budget for preventing the next one is cut accordingly.
Fairness requires, third, naming plainly the pessimists who were right, because the record above would otherwise leave the false impression that confident warnings of bad outcomes are rarely borne out. Richard Doll and Austin Bradford Hill published evidence from 1950 onward, against public disbelief and organised industry resistance, that smoking causes lung cancer; they were not merely correct but understated, since the eventual global mortality from tobacco exceeded what almost anyone in 1950 was prepared to entertain. The geochemist Clair Patterson warned from the mid-1960s that leaded gasoline was raising lead levels in human blood and bone worldwide; he was harassed and defunded for it, vindicated decisively, and the eventual worldwide removal of lead from fuel, completed only in 2021, stands as a measure of how much preventable harm the delay in believing him cost. Mario Molina and Sherwood Rowland published in Nature in 1974 the hypothesis that chlorofluorocarbons were destroying stratospheric ozone; they endured a decade of scepticism before the Antarctic ozone hole confirmed the mechanism, they received the Nobel Prize, and the treaty their warning produced is the reason the catastrophe never occurred. Raghuram Rajan told the assembled central bankers at Jackson Hole in 2005 that financial innovation was concentrating dangerous risk in the banking system, and was condescended to for it in terms his hosts later regretted; three years proved him right, and he stands for the several economists, none of them heeded, who saw the housing collapse coming while the consensus elsewhere convicted of pessimism was, on the one occasion it mattered most, fatally optimistic. And the central scientific forecast of the age, that accumulating greenhouse gases would warm the planet, raise the seas, and shift the climate, made quantitatively as early as the 1960s and 1970s and refined since, has been substantially borne out by the observational record, however badly particular spokesmen served it with countdown deadlines and interview-room dates of the kind recorded above. The failure of the ninety-six-months clock says nothing against the trend it was meant to dramatise, and anyone tempted to read the list as a brief against climate science should note that its climate entries convict only the clocks.
Taken together, the fair reading is not that pessimists are usually wrong, nor that optimists are usually right, but something narrower and more useful than either. Human beings, across two and a half centuries and every subject from grain to currencies to comets, have shown a persistent tendency to state forecasts of catastrophe with more confidence in the mechanism, the magnitude, and above all the date than the evidence could support, and the same tendency, in mirror image, governs forecasts of triumph, which is why the list stands as a companion to a ledger of good news and not as a replacement for it. Certain lessons do emerge. Forecasts that extrapolate a present trend in a straight line fail most often, because they assume the one thing history least reliably supplies, a world that keeps its premises fixed while the trend runs on. Forecasts that name a date fail more visibly than forecasts that do not, which is partly why the vague ones survive in memory as wisdom. Retraction is so rare that the handful of forecasters above who managed it, Metcalfe with his blender, Gribbin, Camping of all people, deserve their footnote of honour. And the forecasts most worth taking seriously have tended to come not from the rhetoric of countdown but from patient measurement, Doll counting his cases, Patterson assaying his ice cores, Molina and Rowland working through the photochemistry. Read alone, either list would mislead. Read together, they counsel neither dismissal nor panic when the next dated, confident, catastrophic claim arrives, as it will this year and every year, but the slower and less glamorous discipline of asking what exactly is being claimed, on what evidence, with what date attached, and then watching, carefully, what actually happens.