All-Seeing AI

fallacy

Anecdotal evidence

Also called: Anecdotal fallacy, Misleading vividness

The anecdotal fallacy uses a personal story or isolated example in place of sound evidence.

How it works

Stories are vivid and memorable, so they often outweigh statistics in our judgement. One case cannot show how common or likely something is.

Examples

"My grandfather smoked every day and lived to 95, so smoking isn't that dangerous."
One survivor does not change the large measured increase in risk.
"My neighbour's car was stolen, so this neighbourhood is getting dangerous."
A single incident does not show a trend; the crime figures would.

How to spot it

  • "I know someone who..." offered as proof.
  • A story stands in for numbers.
  • The example is memorable because it is unusual.

How to respond

  • Acknowledge the story, then ask how typical it is.
  • Bring in base rates or larger studies.
  • Use stories to illustrate a claim, not to establish it.

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