The engineer is placed in the guillotine. His eyes open wide and he says, "I see what's happening. The rope is catching on that nail..."
Did they remove the nail?
The graduate with a science degree asks, "Why does it work?"The graduate with an engineering degree asks, "How does it work?"The graduate with an accounting degree asks, "How much will it cost?" The graduate with an arts degree asks, "Do you want fries with that?"