https://news.ycombinator.com/item?id=48029673

There's nothing in the law to support your argument either. The law however does say, very unambiguously, that copying without permission isn't allowed . There aren't exceptions for "training" just because it's superficially similar to a human activity (reading a book). A human isn't allowed to hand-copy Harry Potter. Even if they bought all the Harry Potter books.

Yes. But training is not copying.