Either he’s fixed it since the two of you wrote what you wrote, or you’re wrong, or I’m terribly confused.
Make that all four of us are wrong. Yes, it seems that the cartoon has been fixed. I quadruple checked the positions of those clauses when I was verifying nshepperd’s claim, since it was surprising. I also observed at the time that it is fortunate that the image would be easy to fix even with my meagre gimp skills. Or MSPaint from windows 95 for that matter.
EDIT: The xkcd forum confirms our sanity and shows the original.
The image in the forum shows the fixed version, at least for me right now. (Maybe it will for you too, if you clear your browser cache? Or maybe there’s a copy of the old version elsewhere in the discussion.)
I think he should have put a note on the comic page acknowledging that he’d fixed a mistake.
The formula he wrote is wrong, you’d need to switch P(I picked up a seashell) and P(I’m near the ocean) for it to be right.
I agree that the formula is wrong. I considered the possibility that it was sarcasm, but either way it’s wrong.
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.
Make that all four of us are wrong. Yes, it seems that the cartoon has been fixed. I quadruple checked the positions of those clauses when I was verifying nshepperd’s claim, since it was surprising. I also observed at the time that it is fortunate that the image would be easy to fix even with my meagre gimp skills. Or MSPaint from windows 95 for that matter.
EDIT: The xkcd forum confirms our sanity and shows the original.
The image in the forum shows the fixed version, at least for me right now. (Maybe it will for you too, if you clear your browser cache? Or maybe there’s a copy of the old version elsewhere in the discussion.)
I think he should have put a note on the comic page acknowledging that he’d fixed a mistake.
He fixes things a lot. There is practically never a notice.
The old version is there if you scroll down.