A theory could be so vague and all-encompassing that it can't even be tested.

一个理论有可能因为概念模糊,且体系庞大而难以得到验证。

耶鲁公开课 - 心理学导论课程节选

Because of that you can do the following experiment, and it's a simple experiment, it's simple to understand, but the concept is very important so I encourage you to think about it and make sure you understand it.

我们可以做一个实验,这是一个非常简单容易理解的实验,但是这个实验验证的概念非常重要,我希望你们能够仔细思考,并且能够掌握

耶鲁公开课 - 生物医学工程探索课程节选