Ron Capik wrote in news:XqSdncQ0dq_JzkjQnZ2dnUVZ_q-
:

OK, try this: blow the game up to 100 doors. Your chance of picking
the winning door on the first try is 1 out of 100. Stick with that
choice and each time a zonk is revealed the chance of the prize being
in the remaining group increases. When you get down to two doors the
chance of the prize being behind the other door is 99 out of 100.
The chance of your first pick being correct is still 1 out of 100.

That may have penetrated.

It all hinges on the host knowing in advance which door hides the prize and
revealing known (to him) bad choices. I still don't agree with the logic,
but I think I follow it.

It's called the "Monty Hall problem"? I'll continue to research.

Thank you for your patience.