The other thing is that, increasingly, the kind of questions that would a) help me and b) I could answer with expertise are the kind of questions that are banned on the various SE sites. SE has ceased being useful to me a while ago.
The other thing is that, increasingly, the kind of questions that would a) help me and b) I could answer with expertise are the kind of questions that are banned on the various SE sites. SE has ceased being useful to me a while ago.
What kind of question are you referring to that are banned?
The problem is, after ~10 years at the university, studying and teaching, I'm basically an expert in "homework". I can answer most university-level questions. I prefer answering (and asking) questions where the answer is "do this, then this, and then you get that", maybe with a few formulas, to a few paragraphs of prose. After all, I personally think that fits better with the SE model and with physics. But actually, what's welcome at the moment are mostly "conceptional" questions where an answer explains an abstract concept with prose. The community has narrowed down the allowed scope a lot out of fear of 1) low-level questions, and 2) accidentally helping somebody with their homework (god forbid!). But instead of getting more expert-level questions, they get less mid-level questions. I've found that I can currently neither ask nor answer anything there.
This issue is compounded by the flood of naive questions: patronizing users will thus spend less time reading decently written questions/answers/comments, and their reading comprehension will suffer from that. End result: even if you posted something that was actually helpful, you can easily get downvoted.