He's narrating in great detail what happened while he was in the womb. Where does this knowledge come from?

他花了很大笔墨很详细地描写了,他还在子宫里发生的事，但他是怎么知道的呢？

耶鲁公开课 - 1945年后的美国小说课程节选

Most of the neurons you have now in your head, right now, you had when you were in your mother's uterus.

此时此刻,你头脑中的大部分神经元,早在你处于母亲子宫中时,就已经拥有

耶鲁公开课 - 心理学导论课程节选

This is the uterus down here, sort of half of it is shown with the uterine wall, the fallopian tubes, and the ovaries.

这里是子宫,基本上半个子宫,包括子宫壁都在这里,这是输卵管,这是卵巢

耶鲁公开课 - 生物医学工程探索课程节选

We know it's an illusion, but we get to live in it so comfortably with so little alteration of the nature of the illusion or of the way in which we negotiate the illusory world, that it becomes kind of womb-like and cozy.

我们知道那是幻觉，但是我们活在其中，如此舒适地,基本不去改变幻觉的本质,也不改变我们在这个幻境中生活的方式，它变得如子宫般安全舒适。

耶鲁公开课 - 文学理论导论课程节选