A Microsoft engineer quit and joined the Marines. At the rifle range he was given some instruction, a rifle, and bullets. He fired several shots at the target, but missed it completely each time. The engineer looked at his rifle, and then at the target, put his finger over the end of the rifle barrel and squeezed the trigger with his other hand. The end of his finger was blown off, whereupon he yelled toward the target area, “It’s leaving here just fine: the trouble must be at your end!”