nobody said anything about lumberjacks! Were talking about hundreds of rc guys like you and me that fly radio control models.I will take their advise any day over a bunch of words written in any book. As we all know the directions that come with our motors state we should run this size prop and get these kinds of rpm's when in reality that seldom happens.We all experiment with differen't props and such to see what does best for us. If there are people out there that go by the book we know they are depriving themselves from better things and that's a fact I don't think anyone can argue with.
As far as the info on the book, it's probably good reading,but it's not going to convince anyone to change what they know to be best for them.I'm not saying what the book states is wrong,I'm saying that for some of us who have experimented with this process have found a better way to break in an engine with synthetics,atleast for the guys who have ventured away from the norm that is.