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All of hwrd's Comments + Replies

[LINK] XKCD Comic #1236, Seashells and Bayes' Theorem
hwrd20

I agree that the formula is wrong. I considered the possibility that it was sarcasm, but either way it's wrong.

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3gjm
Either he's fixed it since the two of you wrote what you wrote, or you're wrong, or I'm terribly confused. It now says (with obvious abbreviations) P(A|B) = P(B|A)P(A)/P(B) which is correct.