I seem to recall quite a protracted discussion here on the merits of the
Monty Hall Paradox.
This concluded that in the three door variant - with the empty door
revealed, I seem to
recall that if you stuck, you rated a one in three chance of winning:
but if you swapped
your door choice after the third empty door was opened, your chances
rose to one in two.
But tonight I saw a Mythbusters experiment, nicely done *, that made the
relative chances
one in three for sticking, and TWO in three for swapping doors.
Bah humbug!
Brian W
* Discovery Channel (HD) 9-10 pm CST. Wed Nov 23rd 2011