Umm, is it me being sleepy, or did he get P(I picked up a seashell) and P(I’m near the ocean) mixed up in the equation? P(near the ocean | evidence) shouldn’t be inversely proportional to P(near the ocean).
Well spotted. Bayes rule is p(A | B) = p(B | A) * p(A) / p(B). This cartoon sees to mixed up p(A) and p(B) just as you note.
Well spotted. Bayes rule is p(A | B) = p(B | A) * p(A) / p(B). This cartoon sees to mixed up p(A) and p(B) just as you note.
The cartoon looks right to me...
It’s been fixed. I think it was previously wrong. The comic thread seems to support this conclusion.
Original version of the cartoon