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OpenAI now tries to hide that ChatGPT was trained on copyrighted books, including J.K. Rowling's Harry Potter series
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
Is reading a passage from a book actually a crime though?
Sure, you could try to regenerate the full text from quotes you read online, much like you could open a lot of video reviews and recreate larger portions of the original text, but you would not blame the video editing program for that, you would blame the one who did it and decided to post it online.