This is a pretty good book. It starts with what is (ostensibly) a clone of the Zettelkasten system -- but then goes into a very different idea of how to organize and make information flow through the system.

The only thing that I find disappointing is the push to make people believe that the system can do things that aren't logically supported. For example, there is part of the book where Tiago pushes the idea that your brain will start to work differently because of this system. He can't really say that -- there is no evidence to back that up... And it shows in the book -- in these sections there is far less reference material to support these claims.

But, I think the overall concept is good... Good enough that I have started working on implementing it myself (well, my own variant, taking some ideas from How To Take Smart Notes as well...)