3 ms·

Change the 3 doors to 10^6 doors and it becomes obvious.

• Myrmornis 7y ago
  No, it becomes less obvious, since the host's help has less influence the more doors there are. EDIT: My reply is based on a misunderstanding. I was assuming that the host continues to open one door, whereas parent intended that the host would open all-but-one doors.
  • rq1 7y ago
    How eliminating 10^6-2 doors is less obvious?
    • _vertigo 7y ago
      Clearly you're assuming that with more than 3 doors, the host will open all but one, and they're assuming that the host will continue to open just one door.
      • Myrmornis 7y ago
        Right, yes that's what I was assuming!
      • rq1 7y ago
        The idea is to understand why it's better to change, not to introduce a new problem.