Each man had to wear socks soaked with red ink and walk on white paper fixed flat to the floor. The footprints showed that all walked in a winding rather than a straight line.

• 实验中的每个人都穿着用红墨水浸过的袜子，在固定在地板上的平整白纸上步行。从脚印可以看出，他们走的是曲线，而非直线。