100:00:12,011 --> 00:00:17,483<i>Riddle me this.When is a door, not a door?</i>200:00:17,484 --> 00:00:19,619<i>It feels like drowning, doesn't it?</i>300:00:19,620 --> 00:00:22,422<i>When the answer is at theedge of your cortex,</i>400:00:22,423 --> 00:00:25,892<i>but you can't seem to grasp it.</i>5