Why do we need to learn this!!!

One day our professor was discussing a particularly complicated concept. A pre-medical student rudely interrupted to ask, "Why do we have to learn this pointless information"
"To save lives." the professor responded quickly and continued the lecture.
A few minutes later, the same student spoke up again. "So how does physics save lives?" he persisted.
"It keeps the ignoramuses like you out of medical school," replied the professor.

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