What it is
Preferring a vivid personal story over systematic data.
In the wild
My uncle smoked and lived to 90, so smoking is safe.
How to answer it
Ask how the story compares to the rate across all cases.
Evidence and sampling
Anecdotal evidence
Also called Argument from personal experience
In depth
Origin and naming
From the Greek 'anekdotos', 'unpublished' — originally a label for private stories, not courtroom testimony. The term hardened into a warning once science made systematic sampling the standard: one striking case is not a dataset. Popular retellings sometimes call it the 'Volvo fallacy' or the 'person-who' fallacy ('I know a person who...').
More places it shows up
The reviews page is full of five-star stories from people who 'never felt better' after the detox tea, so the nutritionist on the panel dismisses the null trial result.
At the family gathering, an uncle waves away sunscreen statistics: his grandfather worked the fields bare-headed for sixty years and 'never had a spot'.
A manager vetoes the remote-work pilot because his cousin's startup 'went fully remote and collapsed in six months'.
Under a viral post about a vaccine side effect, thousands of commenters swap alarming personal stories while the linked study showing rarity goes unclicked.
How to spot it
- The story is always vivid, named, and close — a friend, a relative, 'a guy I know' — while the data is abstract and far away.
- Ask 'how many cases are we not hearing?' and the room goes quiet; the sample was never counted, only performed.
- The storyteller treats changing the subject to their story as if it answered the statistical question.