If you built a model to schedule a network oftrains, could you re-use that model to calculate the depreciation of those trains?
如果你建立一个模型来指定列车时刻表，你会使用当初用来计算火车折旧的模型吗？
2
You're at the mercy of the schedule, of drivers, of other people slowing the system down, of trains breaking down and backing the system up, and so on.
你要受时刻表、司机还有其他会减慢系统运行的人的摆布，列车有时还会抛锚和后退，等等。
3
In refusing to run to catch trains, I have felt the true value of elegance and aesthetics in behavior, a sense of being in control of my time, my schedule, and my life.