I would say that your approach to the book, and possibly your own learning, is misinformed. They talk about it on the course - the Einstellung effect: entrenched pathways inhibiting your way to new approaches. The techniques are practical, and cerebral musingdoesn't give you an insight on efficacy. You literally have to try it. Mini-testing and "daydream" methods for scraping your subconscious? Definitely not taught in middle school - or frankly, anywhere.