Reading “thinking fast thinking slow” should not take 8-9 hours... it could easily take 50 (after all, it represents many years and thousands of hours of work by the preeminent thinker on the subject). Scholars have spent a lifetime studying the Inferno.
I am typing this as I stand in line at a coffee shop in nyc as a kid is listening to music while reading “sapiens”. How can you expect to meaningfully absorb this content in a distracted environment, no pen for annotations and your attention span completely under assault?
I believe humanity’s ascension over the past two hundred years is pretty clear proof that books (or the written word) work well as a form of knowledge transfer but they require you to work for it.
“there’s no such thing as free lunch”
Ps a good primer on this, for those who care, is Mortimer Adler’s “How to Read a Book”