In these music "lessons," you will learn many things about rock music you never knew before. Some new facts will be interesting. Others not. But you can count on this: none of these new facts will do you or anyone else any good in any situation that matters for the rest of your life. You will see that this is indeed the case immediately upon apprehending the new fact. No reflection is required. In epistemology, there is a fancy word for this sort of immediacy in recognizing the truth, but I forget what it is. The point is, the uselessness of the facts I teach is never debated.
CONTEST: Falsify the underlined claim. That is, identify one of the new facts I teach and make a reasonable argument to the effect this fact might, in some situation, do someone some good. Any kind of situation. Any kind of good. Say, "SAT exam, higher score." If you can do that, my claim that that my encyclopedic knowledge of rock music containing only useless--and I mean completely useless--knowledge will have been proven wrong.
If you see a claim that seems dubious or you wonder whether it can be proved, please know, it is true, or if not, it is invented to serve the role that truth plays in discussing rock music. If you are unconvinced, assume that the new fact I have taught you is correct, and ask: if true, could this claim do anyone any good in any conceivable situation? Proceed from there.
NEW FACT: It was the genius of the second verse that made "I'm A Believer" the hit it was.