The book was okay, nothing really new to me but some of the sections seemed rather rushed. I think for himself he concluded once you pass 3 degrees you are going to hit 6 degrees rapidly after so no point in too many expositions about the in between states that are transient. At least that was the impression I got.
I should be able to change a diaper, plan an invasion, butcher a hog, design a building, write, balance accounts, build a wall, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, pitch manure, program a computer, cook, fight efficiently, die gallantly. Specialization is for insects.