How Physics Saves Lives

One day our professor was discussing a particularly complicated concept. Apre-med student rudely interrupted to ask:

- Why do we have to learn thisstuff?

- To save lives. - the professor responded quickly and continued the lecture.

A few minutes later, the same student spoke up again. - So how does physicssave lives? - he persisted.

- It keeps the ignoramuses out of medical school - replied the professor.