why anecdotal ‘evidence’ is problematic

Often on Sciblogs someone ends up pointing out that another commenter’s ‘evidence’ is anecdotal, and thus doesn’t offer particularly strong support for a particular point of view. I’m kicking myself for not providing the link to this video, the last time it happened 🙂

At least a couple of times I’ve made a comment along the lines of "the plural of anecdote is not data". Now here’s an excellent video (courtesy of Evidence-Based Thought) that explains why not:

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