Perhaps I need to argue more with the authors and the content, as Adler & van Doren also recommend.

This might be a limitation in (the way I do) Zettelkasten. Because I am not writing in the margins and not engage in "tearing up" the book, I am less inclined to argue against/with the work.

Maybe I need to do this more using bib-card. Further thought on implementation necessary...

Perhaps a different reason is that I like to get through most books quickly rather than slowly. Sometimes I do the arguing afterward, within my ZK.

I need to reflect on this at some point (in the near future) and optimize my processes.