Mike said our brains are constantly sorting through information and so we discard millions of unnecessary facts every day. If we were to spend an hour in a giant ballroom, our brains would never think to count how many chairs are in the room. Meanwhile, we would always know where the exits are. Why? Because our brains don’t need to know how many chairs there are in the room to survive, but knowing where the exits are would be helpful in case there was a fire.
