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Common Fallacies

Fallacy Translation Definition Symbolic
Post hoc ergo propter hoc After this, therefore because of this Confuses temporal succession with causation.
Cum hoc ergo propter hoc With this, therefore because of this The classic correlation vs. causation.
Ignoratio elenchi Ignorance of refutation Proves or disproves an irrelevant matter, rather than addressing the argument.
Petitio principii Begging the question Assumes what is attempting to be proven.
Argumentum ad hominem Argument to the person Attacks the one making an argument, rather than addressing it.
Argumentum ad ignorantiam Argument from ignorance Asserts a proposition true, if it is not yet disproven (or vice versa).
Argumentum ad verecudiam Argument to reverence Relies on the opinion of an authority, avoiding presentation of any reason.
Argumentum ad populum Argument to the people Claims truth or good of something out of its popularity alone.
Argumentum ad baculum Argument to the stick Appeals to force or threat, rather than reason.
Argumentum ad misericordiam Argument to pity Appeals to pity or compassion, rather than relevance.
Tu quoque You too Discredits an argument out of the relevant hypocrisy of the one presenting it.

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