Within Ignorance
Why Silence Makes Rumours Feel True
A delayed or absent denial can raise questions, but it does not by itself confirm that a rumour is true.
On this page
- How rumours turn gaps into confirmation
- Reasons institutions may not answer quickly
- Questions to ask before sharing an unverified claim
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Introduction
Rumours often gain credibility not because strong evidence supports them, but because nobody has publicly denied them. A delayed response, a refusal to comment, or complete silence can create the impression that “there must be something to hide”. This is a specific form of the appeal to ignorance fallacy: treating the absence of a denial as proof that a claim is true. In reality, silence is ambiguous. It may reflect legal advice, lack of information, organisational delays, privacy concerns, strategic communication choices, or simple inattention. Converting that silence into confirmation is a reasoning error because the missing denial does not establish the truth of the rumour. [PMC]pmc.ncbi.nlm.nih.govPMCAppeal to IgnorancePMC - NIHby J Magnan · 2018 · Cited by 7 — Appeal to ignorance is also known as argument from ignorance, in which ignorance represents “a… [2oercollective.caul.edu.au]oercollective.caul.edu.auThe Burden of Proof and Arguments from Ignorance This is an appeal to ignoranceThe fact that no one has produced evidence that the claim is false is not enough reason to believe it's true. There are lots…
This mistake matters because rumours thrive in conditions of uncertainty. When people are searching for explanations, unanswered questions can feel more persuasive than they really are. The result is a powerful illusion: a gap in public information starts to look like evidence of a hidden reality. [EBSCO]ebsco.comEBSCORumor and Gossip | Social Sciences and HumanitiesRumors typically involve the transmission of unverified information about significa… [Frontiers]frontiersin.orgFrontiersSharing or Not: Psychological Motivations of Brand Rumors…by X Zhang · 2022 · Cited by 18 — DiFonzo and Bordia (2002) found t…
Why Silence Makes Rumours Feel True
The human mind is uncomfortable with uncertainty. When information is incomplete, people naturally try to fill gaps and construct a coherent story. Rumours often provide a simple explanation, while silence leaves a vacuum. That vacuum can make the rumour feel increasingly plausible even when no new evidence has appeared. [EBSCO]ebsco.comEBSCORumor and Gossip | Social Sciences and HumanitiesRumors typically involve the transmission of unverified information about significa… [Frontiers]frontiersin.orgFrontiersSharing or Not: Psychological Motivations of Brand Rumors…by X Zhang · 2022 · Cited by 18 — DiFonzo and Bordia (2002) found t…
A common pattern looks like this:
- An unverified claim appears.
- The target does not immediately respond.
- Observers ask why there has been no denial.
- The lack of denial is treated as confirmation.
- The rumour spreads as though it has been verified.
The flaw occurs in step four. The reasoning jumps from “we have not heard a denial” to “the allegation must be true”. That leap mirrors the broader appeal to ignorance: a conclusion is drawn from missing evidence rather than positive proof. [PMC]pmc.ncbi.nlm.nih.govPMCAppeal to IgnorancePMC - NIHby J Magnan · 2018 · Cited by 7 — Appeal to ignorance is also known as argument from ignorance, in which ignorance represents “a… Wikipedia Psychological research on misinformation suggests that people often form beliefs before they carefully evaluate evidence. Once a claim feels [Wikipedia]WikipediaArgument from ignoranceArgument from ignoranceArgument from ignorance (Latin: argumentum ad ignorantiam), or appeal to ignorance, is an informal fallacy whe… familiar or intuitively plausible, the absence of contradiction can strengthen acceptance even when objective support remains weak. [Nature]nature.comNatureThe psychological drivers of misinformation belief and its…by UKH Ecker · 2022 · Cited by 1919 — In this Review, we describe the…
How Rumours Turn Gaps into Confirmation
Rumour-driven reasoning frequently relies on assumptions about what a person or institution would do if the rumour were false.
The argument often takes a form such as:
“If it were false, they would deny it.” “They have not denied it.” “Therefore it must be true.”
The hidden weakness is the first premise. There are many situations in which a false claim may go unanswered. Unless it is established that a denial would almost certainly occur, the conclusion does not follow. [oercollective.caul.edu.au]oercollective.caul.edu.auThe Burden of Proof and Arguments from Ignorance This is an appeal to ignoranceThe fact that no one has produced evidence that the claim is false is not enough reason to believe it's true. There are lots…
The Headline Effect
Public figures, organisations and companies sometimes avoid responding because a denial can amplify a rumour. A little-known allegation may reach a far larger audience once a formal response generates news coverage. Critical-thinking researchers have noted that people may decline to answer precisely because responding would publicise the claim further. [oercollective.caul.edu.au]oercollective.caul.edu.auThe Burden of Proof and Arguments from Ignorance This is an appeal to ignoranceThe fact that no one has produced evidence that the claim is false is not enough reason to believe it's true. There are lots…
In these cases, silence is not evidence of guilt or confirmation. It may simply be a calculation that engagement would increase attention.
The Escalation Effect
As a rumour spreads, each hour or day without a response may be reinterpreted as additional evidence. Yet nothing new has actually been learned. The same absence is repeatedly counted as though it were fresh proof.
This creates an illusion of accumulating evidence when, in reality, the argument still rests on a single informational gap. The rumour grows stronger socially without becoming stronger evidentially. [EBSCO]ebsco.comEBSCORumor and Gossip | Social Sciences and HumanitiesRumors typically involve the transmission of unverified information about significa…
Reasons Institutions May Not Answer Quickly
One of the easiest ways to avoid this fallacy is to recognise how many explanations can produce silence.
Verification Takes Time
Organisations often need to investigate before speaking publicly. Internal fact-finding, legal review, consultation with experts, or coordination across departments can delay responses. A slow response may reflect caution rather than concealment. Research on rumour management repeatedly highlights the role of information uncertainty and response timing in public communication. ScienceDirect [PMC]pmc.ncbi.nlm.nih.govPMCAppeal to IgnorancePMC - NIHby J Magnan · 2018 · Cited by 7 — Appeal to ignorance is also known as argument from ignorance, in which ignorance represents “a…
Privacy and Confidentiality
A company, school, hospital, or government agency may possess information it cannot legally disclose. Even when a rumour is false, privacy obligations can limit what officials are willing to say publicly.
Observers often see only the silence, not the constraints behind it.
Legal Risk
Lawyers frequently advise organisations not to comment while litigation, investigations, or regulatory proceedings are underway. Public statements can create additional legal complications.
From the outside, this restraint may look suspicious. Internally, it may be routine risk management.
Strategic Non-Engagement
Some rumours fade when ignored. Others grow when challenged. Communication professionals sometimes decide that responding would grant credibility to a fringe claim or attract wider attention. The choice may be controversial, but it demonstrates why silence cannot automatically be interpreted as confirmation. [Cutting Edge PR]cuttingedgepr.comThis article details how to counter rumors on the grapevineCutting Edge PRHow to counter negative rumors on the grapevine in your…March 16, 2025 — 16 Mar 2025 — Rumors in the workplace are the…
Genuine Lack of Information
An institution may not yet know whether a claim is true or false. In rapidly developing situations, the absence of a statement can simply reflect incomplete knowledge rather than a hidden admission. [ScienceDirect]sciencedirect.comScienceDirectInterplay of rumor propagation and clarification on social…by P Agarwal · 2022 · Cited by 81 — Results from this study in…
When Silence Can Matter
Not every inference from silence is irrational. Sometimes the absence of an expected response provides some evidence.
The key question is whether a response would strongly be expected if the rumour were false.
For example, if an organisation routinely issues rapid corrections, possesses the relevant information, faces little legal risk, and has a strong incentive to protect its reputation, prolonged silence may legitimately raise questions. Even then, silence is not proof. It is merely one factor among many. [Law Explores]lawexplores.comLaw Explores On the Absence of EvidenceLaw ExploresOn the Absence of Evidence | - Law Explorer26 Oct 2015 — Arguing from ignorance is usually taken to be a fallacy, but it can…
Good reasoning distinguishes between:
- Silence as a clue that may deserve investigation.
- Silence as proof that supposedly settles the matter.
The first can be reasonable. The second is usually an appeal to ignorance. [Law Explores]lawexplores.comLaw Explores On the Absence of EvidenceLaw ExploresOn the Absence of Evidence | - Law Explorer26 Oct 2015 — Arguing from ignorance is usually taken to be a fallacy, but it can…
Questions to Ask Before Sharing an Unverified Claim
Before treating a missing denial as evidence, it helps to ask a few practical questions.
What direct evidence supports the rumour?
If the strongest support is merely that nobody has denied it, the claim is resting on a weak foundation.
How long has the information been available?
A few hours of silence during a complex event mean very little.
Does the target have reasons not to comment?
Legal, privacy, security, and reputational considerations can all delay responses.
Would a denial necessarily be public?
Some corrections occur through internal channels, regulators, courts, or private communications rather than press statements.
Has anyone independently verified the claim?
Verification matters more than reactions. A rumour should stand or fall on evidence, not on whether someone responded to it.
Could responding make the rumour spread further?
If so, non-response may be a deliberate communication strategy rather than an admission. [Cutting Edge PR]cuttingedgepr.comThis article details how to counter rumors on the grapevineCutting Edge PRHow to counter negative rumors on the grapevine in your…March 16, 2025 — 16 Mar 2025 — Rumors in the workplace are the…
The Practical Lesson
Rumours built on missing denials exploit a simple but powerful mistake: confusing unanswered claims with confirmed claims. Silence can be interesting, and in some circumstances it can justify further scrutiny. What it cannot do on its own is establish that a rumour is true.
Within the broader family of appeal-to-ignorance fallacies, this pattern is especially persuasive because it feels intuitive. People expect innocence to speak immediately and guilt to remain silent. Real institutions and real people, however, often stay silent for many reasons unrelated to the truth of a rumour. The safer rule is to look for positive evidence rather than treating the absence of a denial as evidence in itself. [PMC]pmc.ncbi.nlm.nih.govPMCAppeal to IgnorancePMC - NIHby J Magnan · 2018 · Cited by 7 — Appeal to ignorance is also known as argument from ignorance, in which ignorance represents “a… [Wikipedia]WikipediaArgument from ignoranceArgument from ignoranceArgument from ignorance (Latin: argumentum ad ignorantiam), or appeal to ignorance, is an informal fallacy whe…
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Endnotes
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Source: pmc.ncbi.nlm.nih.gov
Title: PMCAppeal to Ignorance
Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC6354513/Source snippet
PMC - NIHby J Magnan · 2018 · Cited by 7 — Appeal to ignorance is also known as argument from ignorance, in which ignorance represents “a...
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Source: oercollective.caul.edu.au
Title: The Burden of Proof and Arguments from Ignorance This is an appeal to ignorance
Link: https://oercollective.caul.edu.au/howtothinkcritically/chapter/the-burden-of-proof-and-arguments-from-ignorance/Source snippet
The fact that no one has produced evidence that the claim is false is not enough reason to believe it's true. There are lots...
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Source: ebsco.com
Link: https://www.ebsco.com/research-starters/social-sciences-and-humanities/rumor-and-gossipSource snippet
EBSCORumor and Gossip | Social Sciences and HumanitiesRumors typically involve the transmission of unverified information about significa...
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Source: nature.com
Link: https://www.nature.com/articles/s44159-021-00006-ySource snippet
NatureThe psychological drivers of misinformation belief and its...by UKH Ecker · 2022 · Cited by 1919 — In this Review, we describe the...
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Source: Wikipedia
Title: Argument from ignorance
Link: https://en.wikipedia.org/wiki/Argument_from_ignoranceSource snippet
Argument from ignoranceArgument from ignorance (Latin: argumentum ad ignorantiam), or appeal to ignorance, is an informal fallacy whe...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/science/article/abs/pii/S0377221721005919Source snippet
ScienceDirectInterplay of rumor propagation and clarification on social...by P Agarwal · 2022 · Cited by 81 — Results from this study in...
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Source: pmc.ncbi.nlm.nih.gov
Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC12708904/Source snippet
management in public health: a system dynamics...by W Dong · 2025 — A rumor is a statement circulated informally within social groups, l...
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Source: cuttingedgepr.com
Title: This article details how to counter rumors on the grapevine
Link: https://cuttingedgepr.com/articles/counter-negative-rumors-grapevine/Source snippet
Cutting Edge PRHow to counter negative rumors on the grapevine in your...March 16, 2025 — 16 Mar 2025 — Rumors in the workplace are the...
Published: March 16, 2025
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Source: Wikipedia
Title: Glomar response
Link: https://en.wikipedia.org/wiki/Glomar_responseSource snippet
Glomar responseGlomar response, also known as Glomarization or Glomar denial, [1] means to respond evasively to a question with the ph...
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Source: sciencedirect.com
Link: https://www.sciencedirect.com/science/article/am/pii/S0377221721005919Source snippet
The objective of...Re...
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Source: youtube.com
Title: Appeal to Ignorance | Logical Fallacy
Link: https://www.youtube.com/watch?v=8M6I8R3d4wQSource snippet
Argument from Ignorance (Argumentum Ad Ignorantiam)...
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Source: youtube.com
Title: [Logical Fallacies]({{ ‘logical-fallacies/’ | relative_url }}): An Appeal to Ignorance
Link: https://www.youtube.com/watch?v=77Sjls1-zu8Source snippet
Appeal to Ignorance...
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Title: Appeal to Ignorance
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The Psychology of People Who Never Defend Themselves Against Rumors...
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Link: https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2022.830002/fullSource snippet
FrontiersSharing or Not: Psychological Motivations of Brand Rumors...by X Zhang · 2022 · Cited by 18 — DiFonzo and Bordia (2002) found t...
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Source: lawexplores.com
Title: Law Explores On the Absence of Evidence
Link: https://lawexplores.com/on-the-absence-of-evidence/Source snippet
Law ExploresOn the Absence of Evidence | - Law Explorer26 Oct 2015 — Arguing from ignorance is usually taken to be a fallacy, but it can...
Additional References
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Source: researchgate.net
Link: https://www.researchgate.net/publication/285965800_Rumor_in_organizational_contextsSource snippet
(PDF) Rumor in organizational contextsRumors alter social perceptions, affect attitudes and behaviors, exacerbate hostilities, help group...
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Link: https://www.facebook.com/ThinkingPowers/posts/todays-fallacy-argument-from-ignorance-aka-appeal-to-ignorancedefinition-and-exp/712845770840123/Source snippet
The argument from ignorance fallacy asserts...TODAY’S FALLACY: ARGUMENT FROM IGNORANCE (AKA Appeal to ignorance) DEFINITION AND EXPLANAT...
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Source: facebook.com
Link: https://www.facebook.com/groups/3412947335689192/posts/3858631411120780/Source snippet
Understanding Rumor Theory and its Effects on SocietyRumor theory is based on how information spreads informally among people, often in a...
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Link: https://www.logicallyfallacious.com/logicalfallacies/Argument-from-IgnoranceSource snippet
Argument from IgnoranceArgument from Ignorance · Description: The assumption of a conclusion or fact based primarily on lack of evidence...
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Source: carnegieendowment.org
Title: countering disinformation effectively an evidence based policy guide
Link: https://carnegieendowment.org/russia-eurasia/research/2024/01/countering-disinformation-effectively-an-evidence-based-policy-guideSource snippet
Countering Disinformation Effectively: An Evidence-Based...31 Jan 2024 — A high-level, evidence-informed guide to some of the major prop...
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distorted way and through social networks. This theory...Read more...
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Source: ses.edu
Title: logical fallacies 101 ad ignorantiam
Link: https://ses.edu/logical-fallacies-101-ad-ignorantiam/Source snippet
Southern Evangelical SeminaryLogical Fallacies 101: Ad Ignorantiam19 May 2017 — The fallacy ad ignorantiam, or an appeal to ignorance, oc...
Published: May 2017
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Link: https://journals.sagepub.com/doi/10.1177/19401612241291811Source snippet
Punishment We Trust: Analyzing Characteristics and...by B Chen · 2026 · Cited by 3 — Denial is simply a direct counterstatement to the o...
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Source: transfercredit.org
Title: Lack of evidence does not count as
Link: https://www.transfercredit.org/blog/humanities/appeal-to-ignorance-fallacy-definition-and-real-examplesSource snippet
Appeal to Ignorance Fallacy: Definition and Real Examples2 days ago — An appeal to ignorance fallacy says a claim is true, or false, beca...
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Source: cambridge.org
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A War of (Mis)Information: The Political Effects of Rumors...by H Huang · 2017 · Cited by 235 — The study finds that rumors reduce citiz...
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