但是这里还有另一种力量在起作用，如果在没有把握的地方，如汽车的引擎盖上看到按钮，我们想像不出它有什么作用，但我们知道它是可以用手指按的对象。

• But there is another force at work here, too. If we see a pushbutton in an unlikely place such as the hood of a car, we cannot imagine what its purpose is, but we do recognize it as a finger-pushable object.