Every few months I regain the mindset of: "I'm going to try harder to become involved in some of amazing discussions that happen around Hubski." Then I find said discussions are mostly over my head and I have little to contribute. So then I just wait till something about music or a writing prompt comes along.
3 things: 1) You will never have your questions answered if you do not ask them. 2) Having your assumptions challenged is the best way to master them. 3) Explaining something to someone else is the best way to learn it for yourself. The idea behind /r/ELI5 is sound, even if the implementation is off a little. Anybody who truly knows what they're talking about should be eager and willing to explain it to anyone who asks. "If you can't explain it simply you don't understand it well enough." - Albert Einstein
One of the more important thing I learned from commenting here is that it is perfectly okay to join a discussion that is way over your head - as long as you realize that fact. If you're over your head, why not ask questions that can bring you closer to understanding?
Asking critical questions is just as important and interesting as giving an opinion on an article. kleinbl00 may seem intimidating but if you just ask him, hey, what do you mean when you say X, you might just get an answer.