One of the great things about APUG is that it brings together people like Bob Carnie ("Bob") and Gerald C Koch ("Jerry") to discuss these sorts of things.
Bob has lots of experience, is both perceptive and intuitive, and understands more about why and how things work then he is willing to let on.
Jerry is also perceptive and intuitive and also has lots of experience, but is most fascinated with the why and how questions.
All the rest of us get to go along for the ride, tossing in other bits and pieces where appropriate (and sometimes where not) and generally end up being a fair bit the wiser.
I've learned a lot from this thread.