I admit that my gut reaction is that there's something fishy about selling notes about someone else's book, but thinking about it more, what's the harm?
There's nothing deceptive or sneaky about it. There's value in distilling information from a bloated book down to its useful ideas.
There are lots of books that are just existing ideas repackaged for a different audience. For example, Atomic Habits is basically a repackaged version of BJ Fogg's research papers. And people see value in that, so why isn't it okay to do that in a more 1:1 way?
There's nothing deceptive or sneaky about it. There's value in distilling information from a bloated book down to its useful ideas.
There are lots of books that are just existing ideas repackaged for a different audience. For example, Atomic Habits is basically a repackaged version of BJ Fogg's research papers. And people see value in that, so why isn't it okay to do that in a more 1:1 way?