I hear you and agree to what you said given the context (complicated concepts, etc). But somehow I doubt these books (Lean Startups, Checklist Manifesto, Agile

I hear you and agree to what you said given the context (complicated concepts, etc). But somehow I doubt these books (Lean Startups, Checklist Manifesto, Agile) are complicated concepts. Derivatives and HFT might be considered complicated concepts. Quicker to read but if it is to the point (especially bullet points) might lead to quicker to remember. I've seen many bloggers claimed they read a 350 pages book in 2 sessions, 1 session, a flight to Chicago (5 hours?) and claiming that they "get it" is a bit questionable. Perhaps they know where the points are and skip the irrelevant parts? If that's the case, why not make the book slimmer? :D But, it is what it is: there's probably a demand from society expecting their money to be worth. I'm asking for a separation of the theory and the application. Start the book with the theory first and finish it with the application (business-case, use-case) to avoid intermingling the concept and the examples.