He claimed that Monty Hall didn’t know the answer to his own problem, and quotes a letter he says was written by Monty Hall in 1990. If this is true, I find it impossible to follow the following New York Times story, from 1991 where Monty explains all the subtleties of the problem in much shorter order than all of the complications on wikipedia.
Unless Monty Hall got a reply to his 1990 letter that explained it to him, and so he knew about it in 1991?
Unless Monty Hall got a reply to his 1990 letter that explained it to him, and so he knew about it in 1991?