One of the oddities of books on trading is how emphatically the authors tend to state their case. As a group, they are rarely satisfied to simply make observations and offer insights. No, axioms are where its at in the world of trading literature.
Which is why I highly recommend one begin reading such literature with any or all of the Market Wizards series by Jack Schwager. Schwager gets some fantastic interviews with many of the world’s best traders (across numerous financial instruments). It makes for interesting reading, but it is also very eye opening. These guys all disagree on what axioms govern the markets! Trader A uses Technique A and thinks anyone who uses Technique B is a bit daft, while Trader B uses Technique B quite successfully but heaps scorn on those who think Technique A is anything but a fool’s errand. And on and on.
My own approach to the market breaks at least 18 rules that govern the universe, according to this or that expert. Which is not to say these folks aren’t experts. Many of them probably are. It just seems many of them believe their trading rules got etched onto stone tablets somewhere along the way.