《银河系漫游指南》里有一台全知全能的计算机 Deep Thought，它为了得到终极答案「生命和宇宙的意义」，花了 750 万年计算这个结果。 这个就很像「推理模型」相比那些 GPT 模型的区别，把推理过程放在计算的时候进行，或者英文中会称为 test-time compute，而之前则是 train-time compute。 以下是摘录的一部分原文： "All I wanted to say," bellowed the computer, "is that my circuits are now irrevocably committed to calculating the answer to the Ultimate Question of Life, the Universe, and Everything ." he paused and satisfied himself that he now had everyone's attention, before continuing more quietly, "but the programme will take me a little while to run." Fook glanced impatiently at his watch, "How long?" he said. "Seven and a half million years," said Deep Thought. "Alright," said Deep Thought. "The Answer to the Great Question ..." "Yes ...!" "Of Life, the Universe and Everything ..." said Deep Thought. "Is." "Forty-two," said Deep Thought, with infinite majesty and calm.