New ideas pass through three periods: 1) it can't be done .2) it probably can be done, but it's not worth doing. 3) I knew it was a good idea all along。新想法要经历三个阶段:1、做不到。2、这件事也许可以做,但不值得做。3、我早就知道这是个好主意。作者:亚瑟•查尔斯•克拉克,20世纪三大科幻小说家之一。
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