Hacker News new | past | comments | ask | show | jobs | submit login

Agreed that the independence of each card makes this seem paradoxical, in a kind of Monty Hall way. I'm reconciling this by noticing that neither person can guarantee that they will themselves be correct, individually. This satifies the independence problem, since they really do have no way of knowing their own card.

Then how do they arrive at a correctively correct answer? I'm reconciling this by noticing that there is no possibility of them both being correct. That is, their strategy effectively divides up the answer space such that they are covering all two possible correct answers.

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact