The cat is just about to pounce by the time you reach 30. You jump up and run for your life. After scampering along numerous tunnels and succesfully completing numerous scientific experiments you eventually lose the cat, and stop to catch your breath. It is then that you remember the stick of dynamite you ate yesterday. It explodes. You have failed to escape from the maze.

P.S. The cat was just in your imagination. So was the dynamite.