Definitions 1
Definitions 2
Definitions 3
Definitions 4
Definitions 5
100

Attacking the person making the argument instead of addressing the argument itself.

AD HOMINEM (ATTACKING OPPONENT'S CHARACTER)

100

Claiming something is true because it hasn’t been proven false (or vice versa).

APPEAL TO IGNORANCE

100

Favoring information that confirms preexisting beliefs while ignoring contrary evidence.

CONFIRMATION BIAS

100

Drawing a conclusion from insufficient or unrepresentative evidence.

HASTY GENERALIZATION

100

Assuming that the attention something gets represents how common or important it is.

SPOTLIGHT 

200

Using personal experience or an isolated example instead of sound evidence or statistics.

ANECDOTAL
200

Mocking or making fun of an argument to make it seem foolish.

APPEAL TO RIDICULE 

200

Using ambiguous language or shifting the meaning of a word in the middle of an argument.

EQUIVOCATION 

200

Assuming that failure to act implies guilt or agreement.

INCRIMINATING INDIFFERENCE

200

Presenting only evidence that supports your claim while ignoring opposing evidence.

STACKING THE DECK

300

Claiming something is true because an authority or expert said it, without evaluating the evidence.

APPEAL TO AUTHORITY

300

Assuming something is true or good because many people believe it or do it.

BANDWAGON

300

Assuming that because one thing follows another, it was caused by it.

FALSE CAUSE 

300

Drawing a conclusion that doesn’t logically follow from the argument presented.

MISSING THE POINT

300

Assuming that how an argument is presented (tone, confidence, appearance) determines its truth.

PRESENTATION 

400

Arguing that a belief must be true or false because of the consequences of accepting it.

APPEAL TO CONSEQUENCE 

400

Assuming someone’s argument is wrong and then explaining why they believe it, instead of addressing the argument itself.

BULVERISM

400

Judging someone’s argument or character based on their associations.

GUILT BY ASSOCIATION

400

Introducing an irrelevant topic to divert attention from the main issue.

RED HERRING

400

Assuming emotional understanding or sympathy proves a point logically.

EMPATHY

500

Dismissing someone’s argument because they don’t follow their own advice.

APPEAL TO HYPOCRISY

500

When the conclusion is included in the premise; restating the claim instead of proving it.
 

CIRCULAR REASONING

500

A conclusion that doesn’t logically follow from its premises.

FALSE SYLLOGISM

500

Extending an argument to absurd extremes to make it seem invalid.

REDUCTIO AD ABSURDUM

500

Repeating an argument or claim so often that people start believing it must be true.

ARGUMENTUM AD NAUSEAM

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