And he tried to figure out why. And he came to the conclusion, quite on his own, that the students who could no longer solve problems, such as fixing cars, hadn't worked with their hands.
他尝试的去找出为什么。然后他得出一个结论，十分独特的结论， 就是那些不能解决问题的学生，比如说修车， 没有用他们的手去工作过。