“The brain is just a neural net” plus real life experience, in fact years and years of experience. Pretty much every example that automated translation gets wrong is when a real life context is required. Our language is not just a sequence of words and sentences, it almost always implies some contextual klnowledge. Where two humans have siginficantly different backgrounds they may have difficulty understanding each other for the same reason. A total lack of real life experience on one of the sides makes it even worse: it produces barely comprehensible near-nonsense.
