as far as I understand while training on books is clearly not fair use (as the result will likely hurt the lively hood of authors, especially not "best of the best" authors).
as long as you buy the book it still should be legal, that is if you actually buy the book and not a "read only" eBook
but the 7_000_000 pirated books are a huge issue, and one from which we have a lot of reason to believe isn't just specific to Anthropic
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