You are making many assumptions. First of all, he is doing the deep dives by researching all those articles, and of course the resulting presentation will be ve

You are making many assumptions. First of all, he is doing the deep dives by researching all those articles, and of course the resulting presentation will be very superficial. The point is exactly to publish a book to allow the reader to partake in the deep dive. Secondly, nobody said anything about applying that stuff to your daily work.