Feelings ran so high that eventually Monty Hall himself became involved. It turns out that in the real show he wasn't obliged to offer the switch at all. Even if he did offer the switch, he would use bribes to trick the contestant into taking the goat. They'd think the odds on their door had now gone up to 1 in 2, so they hated to give up the door no matter how much money I offered. Still, if these ambiguities seem like an excuse then think again.
People still get the problem wrong, even when it is stated carefully.
The problem has spread from one discussion forum to another, it has appeared in numerous places on the Internet and has recently been discussed in the British magazine New Scientist and even featured in the Royal Institution Christmas lectures televised in December. If there's one thing about probability theory that is certain, it's that the Monty Hall puzzle will be making fools of people for many years to come.