我们没有刻意挑选受访者，因为这些事情总会发生，也正因为这一点，我们能精确地比较他们在事发前后的幸福感。
They were not selected because these things would happen and because of that, we can accurately compare their happiness before and after.
事实上，《幸福计划》是我所写的第一个重要的事情但是没有做到这一点。
In fact, the Happiness Project is the first major thing I've written that doesn't do this.
但有一点是明确的，没有必要的金钱与幸福之间的联系。
But one thing is clear that there's no necessary connection between money and happiness.
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