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Ideas must be put to the test. That's why we make things, otherwise they would be no more than ideas. There is often a huge difference between an idea and its realisation. I've had what I thought were great ideas that just didn't work.
思想必须经受考验。这就是为什么我们要制造东西，否则它们就只是想法。一个想法和它的实现之间往往有很大的区别。我曾经有过一些我认为很好的想法，但是没有成功。