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slippery slope

Claiming one step will set off an unstoppable chain of worse ones, without support.

A slippery slope argument rejects an action because it will supposedly lead, link by link, to some extreme outcome. It is fallacious when the links are not supported; a chain in which every step is shown to be likely is a legitimate argument.

Examples

  • "If we let students retake one quiz, soon they'll expect to retake every exam, and grades will mean nothing."

See also

post hoc oversimplified cause
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