translation.en: If I've learned anything from these decades of working on these problems, it's this: just because somebody tells you something and they say it with confidence, just because they say it with lots of detail, just because they express emotion when they say it, it doesn't mean that it really happened.
translation.zh: 这么几十年的工作确实让我 学到些东西，那就是： 即使有人告诉过你， 而且是胸有成竹地告诉你， 即使他们描述了很多细节， 即使他们满怀激情地描述， 那也不等于它真的就发生过。