The first scientist grabs a fly out of the jar, pulls of it's antennae, and says "Fly, fly!" The fly flies around the room, then lands back down on the table. The scientist writes in his notebook "Fly can fly without antennae." The second scientist grabs a fly out of the jar, rips of its legs, and says "Fly, fly!" The fly flies around the room, then skids back down onto the table. The scientist writes in his notebook, "Fly can fly without legs." The third scientists grabs a fly out of the jar, rips off it's wings, and says "Fly, fly!" The fly doesn't move, and after a few seconds the scientist says again, "Fly, Fly!" The fly just kinda hops around. So the scientist writes in his notebook, "Fly can't hear without wings."