Ideas and arguments

fallacious

fuh-LAY-shuss · adjective

Based on false reasoning or a mistaken belief.

A flashy but false cake-cure claim, a mnemonic for fallacious

Memory connection

Picture “false and flashy

A flashy recipe claims that one slice of cake cures every cough. The claim looks appealing, but its reasoning is false.

The sound cue helps you reach the scene; the action in the scene carries you from the scene to the definition.

Use it accurately

Meaning in context

The argument is fallacious because it assumes that correlation proves causation.
It would be fallacious to judge the entire program from one unusual result.

Fallacious describes reasoning, arguments, assumptions, or conclusions. It does not simply mean factually incorrect; the underlying inference is defective.

Common patterns

  • fallacious argument
  • fallacious reasoning
  • logically fallacious

Quick check

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Which claim is fallacious?

Choose an answer, then explain it in your own words.