For those who doesn't know Month Hall problem, check my link, or read a variant below.
You have 100 doors in front of you, one of them is full of gold, 99 are empty. You choose one. It's the number 57.
Then, me, the presentator, open 98 empty room. I open all except 57 and 73.
Then, you have the choice between stick with your 57 door choice, or change it and goes to the 73 one.
The best choice is to change.
On P.I., I feel like sometimes we have the same problem.
But I got a lot of troubles for seeing it.
Am I wrong? Am I right?