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请设想这样一个场景:你站在铁轨的旁边。向右看,轨道延伸到远处,而向左看,轨道则通向一个两边都是峭壁的窄小峡谷。峡谷中有5位工人正在铁路上施工。你朝右看时,发现有一列火车正在驶来。峡谷中的人被峭壁挡住看不见火车。可以确定的是,当他们看见火车的时候,就来不及离开铁轨了,而火车此时也来不及停车,一场灾难将不可避免。这时候,你注意到面前有一个操作杆,可以扳动道岔将火车引导到附近一条废弃不用的铁轨上。问题迎刃而解—你可以改变火车行
Imagine a scenario where you stand beside a railroad track. Looking to the right, the orbit extends to a distance, while to the left, the orbit leads to a narrow canyon on both sides of the cliff. Five workers in the gorges are working on the railroad. When you look to the right, you find a train coming. People in the canyon are blocked by the cliffs and can not see the train. To be sure, when they saw the train, it was too late to leave the tracks, and the train was too late to stop at this time. A disaster would be inevitable. At this time, you noticed that there was a lever in front of you, and you could turn the switch to bring the train to a nearby abandoned track. The problem is solved - you can change the train line