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  • double2
    +5

    I almost lost a friend trying to explain this to them. I usually turn to a pack of cards and the ace of spades. It's amazing the stubbornness of our minds!

    • oystein
      +3

      Is a friend truly a friend if he can't understand the Monty Hall problem? :-P

      • double2
        +3

        A dear acquaintance then ;)