The forays into neurobiology, however high-level and simplified for non-biologist readers, make the concrete suggestions here more credible. There are some useful (though not necessarily completely novel) insights into the limitations of the brain, and techniques for compensating for them. I've found myself using some of these techniques to good effect already. Another thing I didn't quite expect was that while reading this, I could map a lot of the brain behaviors described to larger social behaviors including political movements -- maybe I'm overreaching there, though. In that respect the book was both inspiring (there are ways to be aware of and compensate for our limits) and depressing (some aspects of human nature are hardwired biologically and won't change without significant conscious effort).