translation.en: If we want to engage someone in the process of opening boxes to try and find pies, we want to make sure it's neither too easy, nor too difficult, to find a pie.
translation.zh: 如果我想让某人参与进 这个为了寻找馅饼去开箱子的过程中 我想要保证这一过程既不太简单 也不会太难