Luke Surl Comics

Discussion (12) ¬

1. 
   MrGBH

   January 17, 2011 at 12:03 am | # | Reply

   I’ve heard of this paradox. But I heard it in Derren Brown’s book where he was explaining how people used to use it with stones under cups for money. It was rather an eyebrow-raiser.
2. clem

   January 17, 2011 at 8:07 am | # | Reply

   I’ve always loved this paradox
3. clem

   January 17, 2011 at 8:08 am | # | Reply

   why do I ALWAYS get the stupid pink angry cube.

   • 
     Luke

     January 17, 2011 at 8:11 am | # | Reply

     Because you don’t have a Gravatar
4. mostly harmless

   January 17, 2011 at 8:59 am | # | Reply

   I love it, but I hate it. Bit of a paradox really.
5. 
   x

   January 17, 2011 at 8:48 pm | # | Reply

   Now I’ll have to wikipedia Monty Hall. I call this the xkcd effect

   • 
     x

     January 17, 2011 at 9:11 pm | # | Reply

     Oh, THAT. I now realise I’ve looked this up before, and it still took my quite some time to wrap my mind around it. Not intuitive at all.

     • MikeB

       April 17, 2011 at 2:43 pm | #

       Took me a while to really understand it as well. Then I realized this:

       Your first pick is probably wrong (2/3 chance of getting a goat). So the car is probably behind one of the other two doors. Helpfully, the host then eliminates one of the remaining two.

       The odds your first pick was right remains at 1/3 because it’s not affected by the host opening another door. The door the host opened has a probability of 0 (duh! it’s a goat, you can see it!). The remaining door has to have the remaining 2/3 probability.
     • Me

       September 23, 2011 at 2:48 am | #

       Thanks so much for explaining it that way! I didn’t get it before and now I do!
       By the way, the “Me” below me is a different “Me”.
6. Me

   January 18, 2011 at 8:37 pm | # | Reply

   It’s more intuitive when you imagine more extreme case:
   100 doors. You pick one, after that the host opens all of them except two (including your pick). Suddenly changing you primary decision does seem like a very good idea.
7. Untitled

   January 20, 2011 at 3:14 am | # | Reply

   I said the exact samething when I first heard this.
   Goats are awesome.
8. Trones

   January 20, 2011 at 6:16 pm | # | Reply

   Wow, I’ve really got to start reading your comic *after* I’ve had my morning coffee =)