So it's a really powerful and simple formalism, once we set up what is needed the go through it, right?

因此这是一种很强大而简单的形式,一旦我们定下需要什么,就可以推导出它，对吧？

麻省理工公开课 - 热力学与动力学课程节选

How can an all-powerful, good God allow so much evil to exist and even go unpunished?

怎么可能，一个万能的，善良的上帝会允许邪恶的存在，甚至不受到惩罚呢？

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