举个例子，比如拍一张有三瓶矿泉水的照片，白天和晚上光线不同，整张图片的色温、亮度都变了，模型可能就不认识了。
For UNSAT problems with 10 variables and 200 clauses, it always claimed that the formula is SAT and made up assignments (See this example).
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"I was reading a magazine article on the Gemini astronauts. I was probably nine years old, and I thought that's the coolest thing. That's what I want to do," she says.