A moment of confusion is like standing in the doorway, looking
  at the doorjam. A foot is in each room. An eye is looking into
  each room at the same time. You look to the left, into a nearby
  room. You remember where you are. So when you look forward
  again, you know where you are and whether you wanted to go into
  that room or the other room or stay where you are. But either
  way, you no longer forgot where you were.