Q, it’s hard to explain even though you know what it is. For electronic circuits, Q is defined as the ratio of the energy stored in the resonator to the energy supplied by a to it, per cycle, to keep signal amplitude constant, at a frequency where the stored energy is constant with time. It’s just not or how wide the frequency is or where it crosses over, it is a very complicated thing when you get into it. There might be one or two of us that didn’t know that. How’s your calculus?
Over the 60 years that I’ve been alive I have found the people who think they know everything, know hardly anything. I doubt Einstein died knowing how to clean a toilet, how to milk a cow or how to play guitar like Jimi Hendrix. He was smart, but there’s a limit to how much anyone knows.