Three engineering students were gathered together discussing the possible designers of the human body. One said, “It was a mechanical engineer. Just look at all the joints.” Another said, “No, it was an electrical engineer. The nervous system has many thousands of electrical connections.” The last said, “Actually it was a civil engineer. Who else would run a toxic waste pipeline through a recreational area?”
三個工程學生聚在一起討論人體是誰設計的。一個學生說:“是機械工程師。只要看看所有的關(guān)節(jié)就知道了。”另一個學生說:“不對,是電氣工程師。神經(jīng)系統(tǒng)有成千上萬個電氣連接。”最后一個說:“其實是土木工程師。還有誰會讓有毒的廢水管道穿過休養(yǎng)區(qū)呢?”