Chickenhawk Fallacy

A Chickenhawk is a person who takes a hawkish or aggressive stance on military issues but has never been to war or served in the military. It can also be applied to the one using the Chickenhawk Fallacy which is to deny standing to discuss military issues to anyone who is not themselves at war or a veteran.

There are many reasons why the Chickenhawk Fallacy is invalid logic, but basically it's just an ad hominem, attacking the arguer rather than the argument.

Latin: ad hominem buteo gallus

Argument by Adjective

Wizard
[Web]

A speaker may pepper his argument with adjectives (or adverb), adding unproved assertions. This tactic draws attention away from the main argument, and as such is a form of red herring. Since the assertions have not been developed, refuting them may be difficult as well. Even if the speaker using them has not met his burden of proof, the emotional content of the adjective.

For instance, an activist or lobbyist may say, "There will be serious repercussions from this illegal bill, and I don't just mean to the political fortunes of those who hypocritically voted for it."

What "serious" means in this context is left veiled, but the real gem is "illegal", which presupposes a number of conditions. Illegality implies some (higher) authority whose precepts have been countermanded, but the bare adjective doesn't specify who that authority is, or in what way the law violates those (higher) precepts. Again, that those who voted for some law professed not to want it is left undeveloped, but the charge of "hypocrisy" raises distrust.

I'll look for other examples and update them here.

Straw Man

Relevance
[Web]

A Straw Man argument is one that attempts to refute a position an opponent hasn't actually taken. Typically the straw man will be an extreme position or, as Bruce Thompson notes, an alleged hidden agenda.

Sometimes the straw man is simply the result of a misinterpreted position. But no matter how well the straw man is defeated, the true position remains unassailed. The Straw Man can be seen therefor as shifting the burden of proof.

Bruce Thompson:

The argument misrepresents a position that it seeks to refute. By refuting the position as misrepresented, the argument creates the impression that it has refuted the position that is actually held by opponents.

Fallacy Files:

As the "straw man" metaphor suggests, the counterfeit position attacked in a Straw Man argument is typically weaker than the opponent's actual position, just as a straw man is easier to defeat than a flesh-and-blood one. Of course, this is no accident, but is part of what makes the fallacy tempting to commit, especially to a desperate debater who is losing an argument.

Poison the Well

Poisoning the Well is an argumentum ad hominem in which an opponent is criticized before his argument has been heard. It is fallacy of relevance, since it doesn't address the argument (being only a guess at it) but the arguer.

Bruce Thompson:

...it is not so much aimed at persuading the audience that the opponent's view is false (which would be an argument) as it is aimed at getting the audience to refuse to listen to the opponent's argument in the first place.

Fallacy Files:

The phrase "poisoning the well" ultimately alludes to the medieval European myth that the black plague was caused by Jews poisoning town wells—a myth which was used as an excuse to persecute Jews.

The Golden Mean

Wizard [Web]

The Golden Mean fallacy says that the truth is somewhere between the extremes, especially right in the middle. Rather, the truth is the truth, extreme or not; "yes" and "no" are two extremes, but very often one is correct and the other incorrect.

Begging the Question

Wizard Web
Latin: Petitio Principii

Begging the Question is circular logic in which an essential premise to the conclusion is itself, stated without support. It has nothing to do with begging for a question, as in common misuse. The "question" is the matter or subject at hand, and the "begging" can be thought of a metaphorical attempt to get it for free. The Latin petitio principii with the English cognate "petitioning the principle" is more appropriate but less colorful.

Non Causa Pro Causa

This is the generalized 'cause and effect' error. A good explanation is provided at Fallacy Files, which separates Non Causa Pro Causa into two classes of errors, based on events and types.

We can and often do mistake coincidence for cause and effect when looking at events. However, two events happening even repeatedly in the same relation to one another in time or space may be caused by some third event of which we aren't aware. We can also get the cause and effect reversed. The cause we identify may be only the end of a domino chain of causes and effects. And the events actually may be totally unrelated except in the way we observe them.

We can also mistakenly assume that because one event of type C generally causes another event of type E, that a particular event c caused a given event e. For instance, we know that shooting a gun can cause a wound, but that doesn't mean that Johnny shooting his gun caused Freddy's wound, even if they were in the same vicinity at the time of Johnny's gunshot. Someone else could have shot Freddy, Johnny may have been shooting at Freddy's assailant (so that Freddy's wound was the cause of Johnny's shot), or Freddy's wound may not even be a gunshot wound.

Related:
Cum Hoc Ergo Propter Hoc - "with this, therefore because of this"
Post Hoc Ergo Propter Hoc - "after this, therefore because of this"
Texas Sharpshooter - assuming a cluster of data points must have a cause

Shifting the Burden of Proof

Shifting the Burden of Proof is employed in two ways: by an arguer, to more easily establish a claim, and by an audience, to make it more difficult.

When employed by an arguer, too much of the conclusion is assumed, rather than being established. A special case is when (all or part of) the conclusion itself is assumed and used as a premise in the argument, which is called circular reasoning or Begging the Question.

When employed by an audience, the burden is set impossibly high. An arguer may be told that he must have a solid case proved before he can plead it.

Questions over where the burden of proof belongs (outside the legal system, which has explicit rules about it) can be easily answered with the question, "Who needs to be convinced?"

Argumentum ad hominem

Latin for: Argument at the man

An "ad hominem" attack is one against a person or group who has stated an idea, rather than the idea itself. Usually, an argumentum ad hominem is attacking a source or authority for information.

As Fallacy Files says, "Argumentum ad hominem also occurs when someone's arguments are discounted merely because they stand to benefit from the policy they advocate."

An argument can be valid or invalid no matter who makes it. A special case of this general principle is that in court, known perjurers may have an impossibly difficult burden of proof to carry, and in fact their testimony may be ruled inadmissible, especially if the perjury occurs during the case at hand.

Ad hominem arguments may often be restated in better form, as changing "You're a socialist." into "What you have expressed is socialist dogma." It still needs work, since there may not be a clear relationship between the former ad hominem target's words and socialist dogma, and there is a need to overcome the burden of proving socialist dogma to be invalid, since some may find socialist dogma to be wholly reasonable.

A special case of ad hominem is the ad hominem tu quoque, in which an argument is attacked because its proponents fail (or failed in the past) to show full adherence to it themselves.

[Updated 7/15/07 for formatting, conversion to search links, and the like.]

Appeal to Humor

Philosophy Pages

[]

Bruce Thompson:

Any stand-up comic will tell you that the secret to humor is: tell the truth. A good comic tells us things about ourselves that we normally wouldn't want to hear since they are too embarrassing or sensitive. But by getting us to laugh at the truth about ourselves, we learn to recognize our own foibles, and we learn to forgive the foibles of others. Humor is the ultimate defense mechanism. We laugh at human foibles because this allows us to live with them. Laughter is a natural and healthy way to respond when we recognize that someone has offered us a bravely-spoken, but possibly uncomfortable, truth.

But as Thompson notes, not all things that are funny are necessarily true. Humor that exploits stereotypes may make us laugh despite knowing, or even because we know, that the stereotype is inaccurate. They transfer us to the realm of fantasy where stereotypes and magic both work, so we are allowed to laugh or feel awe over things which would otherwise be rejected by better judgement.

Julia Nefsky wrote in Philosophy Now that logical errors in humor can be the essence of the joke, enhance the humor, or be the mechanism for it. Thompson's distinction between laughing at and with the user of the illogic can appear in any of those cases.

Amphiboly

Amphiboly (Web) is creating an ambiguous premise with poor or misleading grammatical construction.

Philosophy Pages has a great example.

Bruce Thompson:

The argument depends upon an ambiguity in grammar. One meaning makes one of the premisses true, but it makes another of the premisses false. The alternative meaning makes the second premiss true, but makes the first premiss false.

Fallacy Files suggests that typically the ambiguity is in abuse of pronouns or descriptors that could apply to either the subject or the object in a sentence.

Complex Question

Wizard, Web

Latin: Plurium Interrogationum

Philosophy Pages

The fallacy of complex question presupposes the truth of its own conclusion by including it implicitly in the statement of the issue to be considered...

Fallacy Files picks apart a Mark Crispin Miller use of the complex question, in which he makes several charges in the form of questions, each of which presupposes a damning premise.

No evidence is given in the article for any of these claims. Loaded questions are used in this way to slip claims into rhetoric without the burden of proving them, or the necessity of taking responsibility for unproven assertions.

Red Herring

(Search)
A Red Herring is a proposition within an argument that seems to apply to the topic at hand, but is actually unrelated. Arguments which rely on a red herring may be perfectly sound, but can reach only an Irrelevant Conclusion. They are a subclass of (and almost synonymous with) Ignoratio Elenchi, or fallacies of relevance.

Bruce Thompson:

The speaker introduces a new subject into the discussion that has a superficial similarity to the topic under discussion. The new subject is so emotionally charged that people cannot resist arguing about it, even though it is off the original subject. Raising the new topic does not really serve the goal of bringing the original subject to a conclusion (i.e. of getting the audience to accept the speaker's position). Rather, it distracts attention away from the original subject, preventing either side from supporting its conclusion.

Fallacy Files:

This fallacy is often known by the Latin name Ignoratio Elenchi, which translates as "ignorance of refutation". The ignorance involved is either ignorance of the conclusion to be refuted—even deliberately ignoring it—or ignorance of what constitutes a refutation, so that the attempt misses the mark.
[...]
(The name of this fallacy comes from the sport of fox hunting in which a dried, smoked herring, which is red in color, is dragged across the trail of the fox to throw the hounds off the scent. Thus, a "red herring" argument is one which distracts the audience from the issue in question through the introduction of some irrelevancy.)

Appeal to Rugged Individualism

This fallacy was named by Bruce Thompson:

The argument attempts to support a position by appealing to the opinion of a small (but opinionated) group of people, or even of a single person. The presumed authority of this person or group comes from their willingness to stand alone against majority opinion.

It can be seen as an appeal to Emotion, Authority, or Novelty.

Appeal to Authority

Latin: argumentum ad verecundiam

An Appeal to Authority is the general name for any argument that rests on who provides some evidence, rather than on the content of the evidence. The name also refers to the specific practice of citing expert opinion.

There are some matters for which an appeal to an expert is perfectly reasonable. If faced with a task of carpentry, mathematics, or bureaucracy, one is wise to consult an expert and trust the guidance received.

In informal logic, however, the opinion of an expert is seldom conclusive in itself. It may be appropriate to list expert opinion as evidence, but only after establishing that such opinion is relevant, available, trustworthy, and not contradicted by other experts, simple experimentation, or common sense. The key question to ask is: is this opinion falsifiable? The carpenter or mathematician cannot afford to give bad advice, since the quality of their advice will become apparent with use. The fortune teller or political pundit ... not so much.

The trustworthiness of an expert must also be considered with respect to the burden of proof. That is, to the extent that an argument rests on the opinion of the expert, the argument also rests on the level of respect that expert commands to the listener. As a special case, the believability of an expert varies inversely with an audience's perception of his bias relative to his opinion.

Conversely, to show that an Appeal to Authority is fallacious (or at least to counter it), it is only necessary to show that one of the following:

• The opinion is taken out of context or misquoted
• This or another expert has given contradictory opinions on the same subject
  
• The expert is a crackpot (ad hominem versus ad verecundiam is a draw)
• Actual facts or simple, solid reasoning that controvert the opinion

See also Experts Agree and the Zone of Conflict

Bruce Thompson:

Ad verecundiam is a Latin phrase that actually means "(appeal) to modesty." However, it is generally referred to as "Appeal to Authority." The arguments in this family appeal to the modesty, i.e. lack of knowledge or expertise, of the listener (and also generally of the speaker). Since the listener is too modest to claim to be an expert in the subject under discussion, the speaker attempts to settle the question by citing the authority of someone who is an expert.

Thompson lists these as examples of ad verecundiam:

• Invincible Authority
• Unidentified Experts
• Celebrity Endorsement
• Appeal to Confidence
• Appeal to Popularity (Ad Populum)
• Appeal to Rugged Individualism (Speak Truth to Power)
  
• Appeal to Tradition
• Appeal to Novelty

Appeal to Emotion

Latin: argumentum ad populam

Philosophy Pages

The informal fallacy of persuading someone to accept (or reject) a conclusion by arousing favorable (or unfavorable) emotions toward it or by emphasizing its widespread acceptance (or rejection) by others.

Bruce Thompson says emotional appeals are fallacious when not relevant to the subject at hand. However, an emotional appeal may be directly relevant and still lead to a false conclusion, depending on whether the facts which engender the emotions are true or not.

Fallacy Files makes a distinction between relevant and fallacious appeals to emotion based on the distinction between arguments for action and for belief:

Appeals to emotion are always fallacious when intended to influence our beliefs, but they are sometimes reasonable when they aim to motivate us to act. The fact that we desire something to be true gives not the slightest reason to believe it, and the fact that we fear something being true is no reason to think it false; but the desire for something is often a good reason to pursue it, and fear of something else a good reason to flee.

Related:

Fallacies

[this page is under heavy construction]

Logical fallacies are statements which have the look of arguments, but miss the mark by being off-topic, incomplete, or by employing some trick of language. They are categorized at PhilosophyPages this way:

• fallacies of relevance:

  appeal to ignorance,

  appeal to authority,

  ad hominem argument, and

  appeal to emotion,

  appeal to force,

  irrelevant conclusion, and

  appeal to pity,

• fallacies of presumption:

  accident,

  converse accident,

  false cause,

  begging the question, and

  complex question,

• fallacies of ambiguity:

  equivocation,

  amphiboly,

  accent,

  composition, and

  division.

  
  

• Accent
  
• The fallacy of accident / Sweeping generalization / Dicto simpliciter
  
• Audiatur et altera pars
  
• Amphiboly
  
• Extended analogy
  
• Anecdotal evidence Anecdote is not the singular of data
  
• Denying the antecedent
  
• Argumentum ad antiquitatem Appeal to antiquity, tradition
  
• Argumentum ad verecundiam Appeal to Authority
  
• Argumentum ad baculum Appeal to force
  
• Bandwagon
  
• Petitio principii Begging the question
  
• Appeal to Belief
  
• Biased Sample
  
• Bifurcation
  
• Burden of Proof Shifting the burden of proof
  
• Conflating Cause and Effect
  
• Circulus in demonstrando
  
• Circumstantial Ad Hominem
  
• Appeal to Common Practice
  
• Complex question Fallacy of interrogation / Fallacy of presupposition: ("When did you stop beating your wife?")
  
• Fallacies of composition
  
• Converting a conditional
  
• Appeal to Consequences of a Belief
  
• Affirming the consequent
  
• Argumentum ad crumenam Money makes right
  
• Cum hoc ergo propter hoc With this, therefor because of this
  
• Division
  
• Ignoratio elenchi Irrelevant conclusion
  
• Appeal to Emotion
  
• Equivocation / Fallacy of four terms
  
• False Dilemma
  
• Appeal to Fear
  
• Appeal to Flattery
  
• Gambler's Fallacy
  
• Converse accident Hasty generalization
  
• Genetic Fallacy
  
• Guilt By Association
  
• Ad hoc Argument by explanation or fallback
  
• Argumentum ad hominem Attack the person
  
• Argumentum ad Hominem Tu Quoque What of you?
  
• Argumentum ad ignorantiam Appeal to Ignorance
  
• Ignoring A Common Cause
  
• Fallacy of the Undistributed Middle / "A is based on B" fallacies / "...is a type of..." fallacies
  
• Argumentum ad lazarum Poverty makes right
  
• Argumentum ad logicam
  
• Plurium interrogationum / Many questions
  
• Middle Ground
  
• Argumentum ad misericordiam
  
• Misleading Vividness
  
• The Natural Law fallacy / Appeal to Nature
  
• Argumentum ad nauseam
  
• Non causa pro causa
  
• Non sequitur Does not follow
  
• Argumentum ad novitatem Appeal to Novelty: Newness makes right
  
• Argumentum ad numerum
  
• Appeal to Pity
  
• Poisoning the Well
  
• Argumentum ad populum Appeal to Popularity
  
• Post hoc ergo propter hoc After this, therefor because of this
  
• Questionable Cause
  
• Red Herring
  
• Reification / Hypostatization
  
• Relativist Fallacy
  
• Appeal to Ridicule
  
• The "No True Scotsman..." fallacy
  
  
• Slippery Slope
  
• Special Pleading Double standards
  
• Appeal to Spite
  
• Spotlight
  
  
• Straw man
  
• 
  Two Wrongs Make A Right