A joke: A scientist is in a room running some tests on a fly he has trapped in a test tube. He plucks one leg off of the fly and tells the fly, "fly". And so the fly does. It buzzes away, and the scientists records the affects of his little experiment on the fly in his notebook. He catches the fly again, plucks off another leg, instructs the fly to fly, and takes note of what happens again. He continues on like this until all six of the fly's legs are gone. With each leg painfully removed, the fly flies, and the scientist takes note. The scientist then removes one wing, tells the fly to fly, and when the fly doesn't take off, he concludes that after six legs and a wing have been removed from a fly, it can no longer hear...