If some false beliefs become movements, communities and identities, what happens to the ones that do not?
Are there conspiracy theories that briefly flare into life and then collapse? And if there are, can their failures tell us how corrosive propaganda might be interrupted before it becomes durable?
The question changes the direction of the investigation.
Looking at anti-vaccine movements, Flat Earth and Hollow Earth, the obvious question had been why they survived.
Why do some ideas survive overwhelming evidence against them? Why do people form communities around them? Why does disproving one claim so often produce another explanation rather than an abandonment of the belief?
But there is a danger in looking only at the survivors.
For every conspiracy theory that becomes part of popular culture, others flare briefly and disappear.
Some attract enormous attention for a few days and then vanish. Some are built around predictions that simply fail to happen. Some assemble groups around themselves but cannot keep them together.
Others disappear as individual claims while the larger worldview that produced them carries on.
There is a genuine survivorship-bias problem here. Thomas Kelly encountered it while studying religious groups built around failed prophecies.
Groups that survive are easier to find years later. They leave organisations, followers, documents and descendants. Groups that collapse are less likely to leave the same trail.
Kelly argues that this has distorted the literature and finds that most of the religious groups examined in the failed-prophecy literature died within ten years of their failed prediction.
He is careful not to claim that the failed prophecy necessarily caused their demise, but the pattern challenges the familiar idea that disconfirmation routinely strengthens belief.
That opens another line of inquiry. Instead of asking only what makes conspiracies durable, it is worth asking what makes them fragile.
And if those conditions can be identified, they may also tell us how false narratives lose their power.
When correction catches the rumour
The simplest place to begin is with a case that was not really a conspiracy theory at all.
On 11 March 2011, the Great East Japan Earthquake struck. Later that day an explosion occurred at LPG tanks belonging to Cosmo Oil in Chiba prefecture.
Soon afterward a warning began circulating that harmful material from the explosion was falling with the rain.
It was almost a perfect environment for a rumour.
There had been a genuine disaster. People were frightened. Information was incomplete. A dramatic event really had occurred at the refinery, giving the false warning a real incident around which to form.
Researchers later examined 187,202 tweets connected with what became known as the Cosmo Oil rumor.
About sixteen hours after the first widely diffused rumor tweet, corrective messages began spreading.
Cosmo Oil, public authorities and established media issued denials. From that point the balance of the widely circulated material changed dramatically.
In the researchers’ sample of highly diffused tweets, 17 of the first 20 affirmed the rumor. In the next quarter, all 19 denied it. A corrective tweet from Urayasu City Hall was retweeted 21,078 times.
The authors describe the rumor as subsiding almost instantly after the official denials.
Cosmo Oil gives us a useful baseline.
In the material the researchers examined, the false warning did not develop into a self-sustaining alternative explanation capable of shrugging off the correction. The informational balance changed.
A frightening claim appeared during uncertainty. Better information arrived. The false claim lost ground.
If misinformation always worked like Cosmo Oil, countering it would be considerably easier.
Unfortunately, it does not.
The prophecy that was supposed to survive
In 1954, an American woman named Dorothy Martin became convinced that she was receiving messages from extraterrestrial beings.
A catastrophic flood was coming, she told a small group of followers, but they would be rescued by a flying saucer.
The appointed time arrived. There was no flood and no flying saucer.
The episode became famous through Leon Festinger, Henry Riecken and Stanley Schachter’s When Prophecy Fails.
Their account became a canonical illustration of cognitive dissonance. Faced with the failure of their prophecy, the believers supposedly rationalized what had happened, maintained their commitment and became more eager to persuade others.
Recent work has challenged that famous version.
Kelly’s published study notes that later scholarship found Martin’s group disbanded immediately after the failed prophecy and that attempts to reproduce the famous post-failure surge in proselytising with other groups generally failed.
Kelly has gone considerably further in a separate archival reconstruction.
Drawing on newly available archival material, he argues that Martin publicly walked back the prophecy and that the original account substantially misrepresented what happened before and after its failure.
Yet Martin did not become a sceptic.
Kelly’s reconstruction finds that she and some associates continued believing in extraterrestrial contact and psychic messages. Martin later taught under the name Sister Thedra.
What did not reappear in her extensive later teachings was the failed 1954 prediction, nor did she reassemble the original group around it.
That gives us the first important distinction.
A claim can die while the worldview around it survives.
Kelly’s broader study offers another clue.
He finds evidence that groups may fare better when a failed prophecy rests on a source of authority that retains legitimacy.
A mistaken interpretation of scripture, for example, need not discredit scripture itself. A failed prediction resting on a leader’s novel claim of supernatural revelation has a more direct route back to the credibility of the leader.
The finding comes from religious movements, so applying it directly to political conspiracies would go too far. It does, however, give us a useful question for the other cases.
When a claim fails, what else has to fail with it?
Jade Helm meets the calendar
In 2015, the United States military conducted Jade Helm 15, a training exercise across several southwestern states.
Before the exercise even began, it acquired another existence online.
Versions of the story described Jade Helm as preparation for martial law, gun confiscation, detention of political opponents, foreign occupation or some combination of these.
Closed Walmart stores became entrances to underground tunnels or detention centres. Blue Bell ice cream trucks became mobile morgues.
These ideas did not emerge from nowhere.
Sam Jackson’s study of the American patriot and militia movement shows Jade Helm being woven into an existing conspiratorial vocabulary involving FEMA camps, false flags, federal tyranny, gun confiscation and a hidden government apparatus.
Some people acted on the claims. A group calling itself Counter Jade Helm formed to monitor the exercise, while others reportedly bought additional ammunition or hid weapons.
The military sent officers to communities where the exercise would take place. At one meeting in Bastrop, Texas, after a lieutenant colonel tried to reassure residents, one man responded that he did not believe a single thing the officer had said.
Jackson observes that evidence contradicting the conspiracy could itself be interpreted as evidence of concealment.
That is very different from Cosmo Oil.
The correcting authority was the same institution that some believers suspected of plotting against them.
Then Jade Helm encountered the calendar.
The exercise ran from 15 July to 15 September 2015. It ended without the predicted military takeover.
Keith Raymond Harris later used Jade Helm to make an interesting epistemic point.
Claims about imminent coups or martial law may initially involve events that an ordinary person cannot investigate very well. Time can change that. Once the supposedly imminent event repeatedly fails to occur, the claim becomes much easier for an ordinary observer to assess.
Harris writes that by the end of the Obama presidency the Jade Helm allegations were clearly false even to a layperson.
The particular prediction had run into reality.
But the ideas that made it plausible did not depend upon Jade Helm. Jackson’s study shows that the surrounding worldview of federal tyranny, false flags and threatened liberties was already there before the exercise.
The claim and the framework capable of producing it were therefore different things.
Reality can kill a prediction without killing the worldview that generated it.
The conspiracy that had almost everything
Then there is Wayfair.
In the summer of 2020, people online began noticing unusually expensive cabinets and other products sold by the furniture retailer Wayfair. Some had human names.
From that coincidence grew the allegation that Wayfair was secretly trafficking missing children through its website, with expensive product listings functioning as disguised sales.
The original tweet attracted little attention.
The story took off after reaching Reddit’s r/conspiracy community, where it was connected to mental models already established through Pizzagate and QAnon. Users began searching missing-person databases and attempting to connect real children to product names.
Wayfair therefore possessed several features that might seem favourable to persistence.
It entered an existing conspiratorial community. It involved an emotionally explosive subject. It encouraged ordinary users to become investigators. It encountered distrust of conventional fact-checking, and it spread across platforms that performed different functions.
Dror Walter and colleagues were able to reconstruct this process in unusual detail because Wayfair’s rise and decline were both remarkably compressed.
They describe the theory as short-lived and well delineated, and their English-language dataset contained 70,877 Reddit entries and more than 1.2 million Twitter posts.
Reddit was more heavily associated with prolonged debates over evidence and plausibility. Twitter carried vastly more volume and a greater proportion of moral outrage and emotional reaction. Reddit activity influenced later Twitter activity, while selected themes travelled in the other direction as well.
For a brief period, the platforms complemented one another. Reddit helped elaborate the story while Twitter helped spread it to a much larger audience.
Debunking did not simply puncture the bubble. The study found a distinct anti-fact-checking theme in which some participants treated rebuttals themselves with suspicion.
The authors also state that Wayfair’s attempt to rebut the claims did little to change conspiracy theorists’ minds.
And yet the story faded anyway. Their reconstruction describes the idea as dying out as online attention moved elsewhere.
That gives us another distinction.
A false narrative can lose its social momentum without every believer first being persuaded that it was false.
The study does not prove that recruitment completely stopped or that all consequences vanished. It does show that persuasion and attention are separate outcomes.
A conspiracy can lose one without necessarily losing the other.
When a claim does not have to survive
SharpieGate offers an almost opposite problem.
During the 2020 US election, concerns arose that Sharpie pens used on ballots might bleed through the paper and invalidate votes.
The story soon became a conspiracy theory alleging that Trump voters had deliberately been given Sharpies as part of an effort to disenfranchise them.
Kate Starbird’s reconstruction follows the claim as it moved from ordinary users through influencers and eventually into prominent political and media accounts.
At the height of one burst, discussion climbed from roughly 200 to 1,200 tweets per minute. In less than two hours, more than 80,000 Sharpie-related tweets were posted.
Some supposed evidence was particularly powerful because people thought they were experiencing the fraud themselves. Arizona voters checking an online system saw that their mail ballots had been cancelled after they voted in person.
Some interpreted this normal administrative status as evidence that the ballots they had cast in person had been rejected. Screenshots then circulated as apparent personal confirmation of the fraud story.
Election officials corrected the Sharpie claims. Some people who had initially raised concerns withdrew them.
But by then the allegation had already been absorbed into the broader Stop the Steal narrative.
Starbird describes #StopTheSteal as a clearinghouse for dozens and eventually hundreds of separate election-fraud allegations.
Even after Arizona officials had debunked the Sharpie story, a prominent media account combined it with several other supposed election anomalies and generated more than 60,000 amplifying engagements.
This suggests a different kind of protection.
The broader election-fraud narrative did not depend upon SharpieGate being true. One allegation could be discarded while many others remained available.
I would call this narrative redundancy. The term is not Starbird’s. It is an interpretation of the pattern her research documents.
A narrative containing many interchangeable allegations is less exposed to the failure of any single one.
When the story keeps finding fuel
The 5G-COVID conspiracy gives us another useful contrast in this line-up.
Researchers traced one of the earliest tweets linking the outbreak in Wuhan with 5G technology to January 2020.
It received little attention.
Similar messages gradually accumulated, however, and within roughly ten weeks arson attacks were being carried out against telecommunications infrastructure in several countries.
Johannes Langguth and colleagues found that this narrative drew heavily on opposition to wireless technology that already existed before COVID-19.
Their analysis also points to the importance of videos rather than Twitter alone and identifies commercial incentives as one factor in the spread of 5G misinformation.
Here too apparent popularity needs careful interpretation.
Wasim Ahmed and colleagues examined 233 tweets during a period when #5GCoronavirus was trending in Britain.
Some 34.8 percent endorsed a link between COVID and 5G, 32.2 percent denounced it, and 33 percent were general discussion. Nearly two-thirds of that sample did not endorse the conspiracy.
Social-media volume therefore cannot simply be read as a measure of belief.
Visibility is not belief. Virality is not adoption.
And neither automatically tells us whether a narrative will still matter next month or ten years later.
So why did some fail?
It would be tempting at this point to produce a neat list of rules for killing conspiracy theories.
The evidence does not allow that.
These cases are too different.
Cosmo Oil was a disaster rumor. Dorothy Martin’s followers formed a tiny religious group. Jade Helm grew from political conspiracism. Wayfair exploded through an existing QAnon environment. SharpieGate became part of a much larger election-fraud narrative. 5G-COVID crossed health misinformation, technological fear and older anti-wireless activism.
But the comparison does produce several useful questions.
Can reality catch the claim?
Some claims make observable predictions. Dorothy Martin gave her followers a date. Jade Helm had a defined period. Failed predictions of this sort can eventually create evidence that does not require expert knowledge to understand.
How much depends upon the claim being true?
Kelly’s work suggests that failure may be more damaging when it strikes directly at a novel source of authority. SharpieGate points toward the opposite possibility. If a broader narrative contains many allegations, losing one may cost very little.
What surrounds the claim before it arrives?
Jade Helm entered a political environment already organised around distrust of federal power. Wayfair entered QAnon and Pizzagate-related communities. 5G-COVID found an existing anti-wireless movement. The Cosmo Oil study, by contrast, documents a rapid shift toward corrective information rather than the emergence of a durable alternative interpretation.
Who is doing the correcting?
These cases cannot establish a universal rule, but the contrast is difficult to ignore. In Cosmo Oil, official denial rapidly dominated the highly circulated tweets. In Jade Helm, a military officer was attempting to reassure people who suspected the military itself.
Can the narrative change shape?
Research on thousands of Facebook rumor cascades found that receiving a Snopes correction made an individual reshare more likely to be deleted, while large cascades could continue despite many corrective comments.
The researchers also found that rumors changed over time and that different variants could dominate separate bursts of popularity.
There is one further possibility that the cases raise but do not prove.
Some conspiracies appear to have a renewable supply of apparent evidence.
Every election can produce counting delays, administrative mistakes and unusual-looking numbers. Every pandemic brings deaths, uncertainty, policy changes and new scientific findings. New technologies continually produce events that can be interpreted through an existing conspiratorial framework.
Wayfair looks different. Its burst concentrated intensely on a relatively narrow collection of product listings, names and missing-person searches.
Walter and colleagues do not establish that this limited evidentiary supply caused Wayfair to fade. That would go beyond their findings.
But the case raises a question useful to us.
Does a false narrative eventually run out of material from which to manufacture new proof?
From conspiracies to corrosive propaganda
This is where failed conspiracies become useful beyond the study of conspiracy culture itself.
Corrosive propaganda does not necessarily require one allegation to survive forever.
A propaganda system can cycle through individual claims while preserving the same interpretive frame. One allegation can be disproved, abandoned or forgotten without damaging the broader narrative very much if another claim is ready to replace it.
SharpieGate illustrates the basic mechanism. The wider election-fraud story did not collapse when one component failed because its credibility did not rest on one component.
The same problem appears in propaganda environments built around repetition and accumulation.
The audience is not necessarily being asked to defend one proposition indefinitely. It is being encouraged to retain an interpretation. New claims then arrive already supplied with meaning.
That changes the counter-disinformation problem.
Fact-checking remains necessary. Cosmo Oil is a reminder that rapid correction can dramatically alter an information environment. But a strategy based entirely on waiting for each new allegation and disproving it from scratch leaves the response permanently reactive.
The harder task is preventing individual falsehoods from acquiring the conditions that make them durable.
That may mean correcting a claim while it is still primarily information rather than identity.
It may mean avoiding unnecessary amplification of fringe allegations.
It may mean building credible institutions before a crisis rather than discovering during the crisis that large parts of the audience no longer trust them.
It may also mean teaching people to recognise recurring methods of manipulation rather than asking them to memorise yesterday’s falsehood.
There is experimental evidence that this last approach can help
A recent study involving 19,735 participants across 12 European countries tested short videos explaining techniques including scapegoating, decontextualisation and discrediting.
At the aggregate level, the longer videos produced significant improvements in manipulation recognition, technique recognition and sharing decisions.
The effects were generally small, however, and varied substantially between countries. The authors themselves caution against assuming that laboratory improvements will translate straightforwardly into large effects in the field.
A separate reanalysis of 33 inoculation experiments involving more than 37,000 participants found improved discrimination between reliable and unreliable material without a corresponding general shift toward indiscriminate scepticism or credulity.
That distinction deserves our attention.
The goal cannot be to teach people that everything is suspicious.
A society in which nobody trusts anything would not be resistant to corrosive propaganda. It would be extraordinarily easy to manipulate.
Perhaps we have been measuring victory incorrectly
When people think about fighting conspiracy theories or propaganda, they often imagine the final confrontation.
Someone believes a false claim. Evidence is presented. The person acknowledges that the claim was wrong.
Sometimes that happens. Often it does not.
The failed conspiracies suggest that persuasion is only one outcome worth measuring.
A correction that prevents a false claim from dominating an information environment can still matter even if some people remain unconvinced.
Preventing an allegation from escaping a small conspiratorial niche can matter. Preventing political or media figures from lending it legitimacy can matter.
A narrative that attracts enormous attention for two weeks and then loses it occupies a very different position from one that turns itself into a durable community capable of generating the next allegation.
And teaching someone to recognise a manipulation technique may prove more useful over time than teaching the correct answer to one specific false claim.
None of this provides a formula for making conspiracy theories disappear. The cases are too different, and several of the explanations raised here remain hypotheses rather than established causal findings.
But they do challenge one of the more fatalistic assumptions surrounding misinformation.
Anti-vaccine conspiracy movements survived. Flat Earth survived. Hollow Earth survived.
Looking only at cases like these can create the impression that once a sufficiently irrational idea enters public life, evidence becomes powerless and very little can be done.
The historical record is a lot fuller than that.
Some false ideas explode and vanish. Some predictions collapse when reality catches them. Some groups dissolve. Sometimes the particular claim disappears while the worldview survives.
Sometimes believers remain unconvinced while the story that briefly united them nevertheless loses its hold on public attention.
The conspiracies that survived can teach us a great deal about how false beliefs endure.
The ones that failed may tell us where the weak points are.
The dog does not always bark.
Understanding why may be one of the more useful lessons for anyone trying to counter corrosive propaganda before a false narrative becomes much harder to remove.
And now, you know.
Sources and further reading:
1. Ogasahara, Morihiro, Hirotaka Kawashima and Hiroyuki Fujishiro. “How Did Rumors on Twitter Diffuse and Change in Expression? An Investigation of the Process of Spreading Rumors on Twitter during the 2011 Great East Japan Earthquake.” Advances in Human-Computer Interaction, 2019, Article 5103840. DOI 10.1155/2019/5103840.
Used for the Cosmo Oil rumor, the 187,202-tweet dataset and the rapid shift toward corrective information following official denials.
2. Kelly, Thomas. “Failed Prophecies Are Fatal.” International Journal for the Study of New Religions 14(1), 48–71. DOI 10.1558/ijsnr.33085.
Used for the survivorship-bias argument, group-demise findings, Dorothy Martin background and the discussion of authority as a possible protective factor after prophetic failure.
3. Kelly, Thomas. “Debunking When Prophecy Fails.” Revised 1 September 2025. Preprint.
Used for the detailed archival reconstruction of Dorothy Martin’s response after the failed prediction, the dissolution of the original group and the continuation of her broader UFO and psychic beliefs. The available version explicitly states that it had not yet been peer reviewed or copyedited.
4. Jackson, Sam. Conspiracy Theories in the Patriot/Militia Movement. Program on Extremism, George Washington University, May 2017.
Used for Jade Helm, the pre-existing patriot and militia conspiratorial worldview, Counter Jade Helm, reported ammunition purchases and the rejection of military reassurance.
5. Harris, Keith Raymond. “Where conspiracy theories come from, what they do, and what to do about them.” Inquiry 68(8), 2025, 2865–2892. DOI 10.1080/0020174X.2024.2375778. Published online 9 July 2024.
Used for the discussion of Jade Helm and the way the passage of time can turn a difficult-to-assess prediction into one that ordinary observers can judge directly.
6. Walter, Dror, Ayse D. Lokmanoglu, Yotam Ophir and Eduard Fabregat. “Some assembly required: Unpacking the content and spread of Wayfair conspiracy theory on Reddit and Twitter.” New Media & Society, online first 2025. DOI 10.1177/14614448251341497.
Used for the Wayfair case, its short lifecycle, cross-platform spread, Reddit and Twitter dynamics, anti-fact-checking discourse and decline.
7. Starbird, Kate. “Unraveling the Big Lie: Participatory Disinformation and the 2020 Election.” In Connective Action and the Rise of the Far-Right, edited by Steven Livingston and Michael Miller. Oxford University Press, 2025. DOI 10.1093/oso/9780197794937.003.0002.
Used for SharpieGate, participatory disinformation and the incorporation of individual fraud claims into the wider Stop the Steal narrative.
8. Langguth, Johannes, et al. “COVID-19 and 5G conspiracy theories: long term observation of a digital wildfire.” International Journal of Data Science and Analytics 15, 2023, 329–346.
Used for the development of the 5G-COVID narrative, its connection to earlier anti-wireless activism, the importance of video, commercial incentives and real-world attacks.
9. Ahmed, Wasim, Josep Vidal-Alaball, Joseph Downing and Francesc López Seguí. “COVID-19 and the 5G Conspiracy Theory: Social Network Analysis of Twitter Data.” Journal of Medical Internet Research 22(5), 2020, e19458. DOI 10.2196/19458.
Used for the distinction between social-media visibility and actual endorsement. In the researchers’ coded sample of 233 tweets, 34.8 percent supported the conspiracy, 32.2 percent rejected it and 33 percent were general discussion.
10. Friggeri, Adrien, Lada A. Adamic, Dean Eckles and Justin Cheng. “Rumor Cascades.” Proceedings of the Eighth International AAAI Conference on Weblogs and Social Media, 2014.
Used for the effects of Snopes corrections on individual reshares, the continued propagation of large rumor cascades despite correction and the mutation of rumor variants over time.
11. Biddlestone, Mikey, et al. “Video inoculation against election misinformation across 12 EU nations.” Communications Psychology 4, 2026, 77. DOI 10.1038/s44271-025-00379-3.
Used for the discussion of technique-based prebunking across 12 EU countries. The study included 19,735 participants and found significant but generally small effects, with substantial variation between countries.
12. Simchon, Almog, Tomer Zipori, Louis Teitelbaum, Stephan Lewandowsky and Sander van der Linden. “A signal detection theory meta-analysis of psychological inoculation against misinformation.” Current Opinion in Psychology 67, 2026, 102194. DOI 10.1016/j.copsyc.2025.102194.
Used for the broader inoculation evidence. The authors reanalysed 33 experiments with a combined sample of 37,025 participants and found improved discrimination between reliable and unreliable material without a general shift toward scepticism or credulity.
