I find this very interesting. I purchased a copy of Mr. Cauldwell's book on inspecting a house at Half Price Books a few years ago. I was NOT impressed with the chapters on electricity, plumbing or heating systems.
Later I read on another website how the "For Pros By Pros" series of books were among the best a person could read and they especially recommended Mr. Cauldwell's book on wiring a home. I freakin' couldn't believe it! Of course, to be fair I must admit that every DIY type of book I have read has gotten at least on thing flat out wrong.
I'm an engineer but the title "engineer" means very little to me. I've known far too many "engineers" over the years that I wouldn't trust to oil the wheels on a kiddie car. I've known electrical engineers that couldn't plug in a toaster or change a light bulb and do it correctly. I've known mechanical engineers that couldn't grasp the simplest concepts of machinery. Yet many of these "engineers" not only had the degree but also a state-issued "Professional Engineer" license.
I've met tradesmen (and women) that claimed to have thirty years of experience but really had one year of experience thirty times over. I'm quite leery of ANYONE that has to brag about their degrees, licenses or years of experience. I've found out over the years that it is often the soft-spoken person that rarely pushes his (or her) thoughts onto others, and even more rarely cites any "qualifications" that is the person that REALLY knows what needs to be done and how to do it. Luckily, we have a number of these people on this board.