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- Path: sparky!uunet!news.claremont.edu!nntp-server.caltech.edu!SOL1.GPS.CALTECH.EDU!CARL
- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: alt.folklore.science
- Subject: Re: More Monty Hall
- Date: 24 Dec 1992 19:27:15 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 35
- Distribution: world
- Message-ID: <1hd2ujINNnci@gap.caltech.edu>
- References: <1992Dec18.165746.10294@cbfsb.cb.att.com> <1h4fbgINN5c5@nz12.rz.uni-karlsruhe.de> <1992Dec21.214559.22343@berlioz.nsc.com> <1992Dec21.230241.19209@colorado.edu>,<1992Dec22.185741.9823@berlioz.nsc.com>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Dec22.185741.9823@berlioz.nsc.com>, worden@bouncer.nsc.com (Dennis Worden) writes:
- >The fact that you now have an open door with a goat behind it does not
- >change the fact that you have 2 door and 1 prize.
-
- That's true. However, the fact that there are two doors and one prize doesn't
- mean there's a 50% chance of either door holding the prize. Your argument
- can be extended as follows:
- Tomorrow morning, either the sun will rise, or it won't.
-
- There are two possible outcomes.
-
- Therefore, there's a 50% chance the sun won't rise tomorrow.
-
- >The opening of the
- >third door only tells you that the prize is not behind that door, it does
- >not add any information as to where the prize really is. Or put it another
- >way, if you consider this new information on the same puzzle, why do you
- >freeze the probability of the original guess at 33%? To freeze the original
- >probabilities at their "pre-new-information" levels means that your are not
- >using that new information. The new information would apply equally to all
- >doors that are left,
-
- No, it doesn't. Because if the other unopened door held a goat, Monty COULD'VE
- opened it. But whether the door you originally picked holds a goat or not,
- Monty CANNOT open that one. You're trying to treat an asymmetric situation as
- if it's symmetric. The fact that you chose a door before Monty opened one
- destroyed the symmetry that's fundamental to your argument.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-