Four decades ago, social scientists conducted an experiment with the elevators in a Canadian university. They added a 16-second delay before the doors closed to see if more people would use the stairs. They did. No surprise there. But what was particularly interesting was that when the elevators returned to normal many people continued to use the stairs, cutting energy costs and raising students’ fitness levels.
4年前，社会科学家在加拿大一所大学进行了一项关于电梯的实验。他们让电梯门延长16秒再关闭，看看是否会有更多人改走楼梯。试验结果证实了他们的想法。这一点也不令人惊讶。但特别有趣的是，电梯恢复正常后，许多人继续走楼梯，从而既降低了能源成本，又改善了学生的体能状况。
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