[tomjen3]

You wouldn't read a book and teach others its lessons without a derived license, would you?

[ben_w]

When I was at school, we were sometimes all sat down in front of a TV to watch some movie on VHS tape (it was the 90s).

At the start of the tape, there was a copyright notice forbidding the VHS tape from being played at, amongst other places, schools.

Copyright rules are a strange thing.

[dijksterhuis]

copyright refers to the act of copying the material at hand (including distribution, reproduction, performance) etc.

as an example: saying “i really like james holden’s inheritors album for the rough and dissonant sounds” isn’t covered by copyright.

if i reproduced it verbatim using my mouth, or created a derived work which is noticeably similar to the original, that’s a different question though.

in your example, a derivative work example could be akin to only quoting from the book for the audience and modifying a word of each quote.

“derived” works are always a grey area, especially around generative machine learning right now.