A college physics professor was explaining a particularly complicated concept to his class when a pre-med student interrupted him. “Why do we have to learn this stuff?†the frustrated student blurted out. “To save lives,†the professor responded before continuing the lecture. A few minutes later the student spoke up again. “So how does physics save lives?†The professor stared at the student without saying a word. “Physics saves lives,†he finally continued, “because it keeps the idiots out of medical school.†N Joy , ~Abhi