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I finally get why you switch in the Monty Hall puzzle

Posted on 9/15/14 at 6:16 pm
Posted by McVick
Member since Jan 2011
4464 posts
Posted on 9/15/14 at 6:16 pm
You have to look at the puzzle through the eyes of Monty Hall and not the game participant. You always switch to gain the best odds. It makes sense to me now.
Posted by gaetti15
AK
Member since Apr 2013
13350 posts
Posted on 9/15/14 at 6:17 pm to
Posted by LNCHBOX
70448
Member since Jun 2009
84039 posts
Posted on 9/15/14 at 6:18 pm to
20 pages

ETA: Well, if you had started this during the work day. Bump it tomorrow around 8AM.
This post was edited on 9/15/14 at 6:20 pm
Posted by tketaco
Sunnyside, Houston
Member since Jan 2010
19380 posts
Posted on 9/15/14 at 6:19 pm to
The frick?
Posted by ell_13
Member since Apr 2013
84937 posts
Posted on 9/15/14 at 6:20 pm to
quote:

I finally get why you switch in the Monty Hall puzzle
FINALLY!!!!
Posted by TheIndulger
Member since Sep 2011
19237 posts
Posted on 9/15/14 at 6:21 pm to
here we go
Posted by McVick
Member since Jan 2011
4464 posts
Posted on 9/15/14 at 6:21 pm to
Posted by McVick
Member since Jan 2011
4464 posts
Posted on 9/15/14 at 6:23 pm to
I know, right? I now feel confident that I can explain the reasoning to someone else who does not understand the puzzle.
Posted by ell_13
Member since Apr 2013
84937 posts
Posted on 9/15/14 at 6:24 pm to
Let's hear it then.
Posted by McVick
Member since Jan 2011
4464 posts
Posted on 9/15/14 at 6:47 pm to
You have a 2/3 chance of initially picking wrong. Once you make a selection, Monty will reveal one door that is not the car. Once he has revealed this piece of information to you, statistics show that you have most likely picked a bunk door (a 2/3 chance of this happening) with your initial choice. You switch because of the reveal. You do not have a 50/50 chance once based on the boundaries of the game.
Posted by KindaRaw
Member since Jun 2014
3963 posts
Posted on 9/15/14 at 6:48 pm to
Posted by Yellerhammer5
Member since Oct 2012
10850 posts
Posted on 9/15/14 at 6:58 pm to
LINK

This is the last post needed in this thread, but please, spend the next 20 pages arguing.
Posted by McVick
Member since Jan 2011
4464 posts
Posted on 9/15/14 at 7:10 pm to
Thanks for the link. Although it does not explain why it works, that website shows us visually why we should change doors.

I finally understood this after listening to the this week's Cracked podcast. It makes a lot more sense to look at the problem not through the participant's perspective but as a third party observer.
Posted by GRTiger
On a roof eating alligator pie
Member since Dec 2008
62688 posts
Posted on 9/15/14 at 7:13 pm to
quote:

This is the last post needed in this thread, but please, spend the next 20 pages arguing.



a-hole
Posted by Traffic Circle
Down the Rabbit Hole
Member since Nov 2013
4231 posts
Posted on 9/15/14 at 7:28 pm to
I think that if people don't understand why you should switch, they may be latently homosexual.
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