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(, Sun 1 Apr 2001, 1:00)
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i believe that there is an equation for this.
in this case I would stick, your chances remain 50/50 regardless of which of the two boxes left you choose
(, Wed 20 Jun 2012, 15:51, 2 replies, latest was 13 years ago)
The argument goes that you are statistically more likely to win if you switch, because you're now dealing with a 50% versus the original 30%
Which is all shit as they have studied this. Most people switch, most people lose.
(, Wed 20 Jun 2012, 15:53, Reply)
Then wade into the Klingon ships with a scarf wrapped around my eyes with a cardboard tube poking out chanting "I AM THE GREATEST I AM THE GREATEST I AM THE GREATEST" as I popped each ship with one torpedo.
Then when the examiner asked me wtf I thought I was doing cheating so blatantly, I'd reply with
"No, YOU'RE beautiful".
(, Wed 20 Jun 2012, 17:14, Reply)
They then eliminate 1 of the options so, you have a 1/3 chance of your box being right and a 2/3 of the other being right.
(, Wed 20 Jun 2012, 15:59, Reply)
That means you don't pick box 2 or 3, think about 2&3 as "not box 1"
An incorrect box say 2 is then removed.
So your choice is box 1 or box 3, but it's better to think about it as box 1 or "not box 1" which givs you the 1/3rd chance of it being box 1 and a 2/3rd chance of being "not box 1" which is box 3
(, Wed 20 Jun 2012, 16:05, Reply)
however it feels like clever maths rather than actual real world fact
(, Wed 20 Jun 2012, 16:11, Reply)
(, Wed 20 Jun 2012, 16:12, Reply)
the problem is that it only works if you assume that the questionmaster didn't know there would be goats behind door 2. Once you accept that if it were a real world problem there would be knowledge on the part of the questionmaster then the odds are meaningless
(, Wed 20 Jun 2012, 16:24, Reply)
when they remove one of the wrong boxes you still have the same chance of being wrong but because they have removed an incorrect box you have a 2/3 chance that the other box is right.
You see?
(, Wed 20 Jun 2012, 16:26, Reply)
I thought you were supposed to keep your original choice but I can't remember why.
(, Wed 20 Jun 2012, 15:56, Reply)
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