There seems to be a tendency on many answers to entirely source everything off Wikipedia. Some answers are almost like "I don't know but Wikipedia says...", however if we are asking here, it means we want knowledgeable people to answer, and not links to Wikipedia articles (we can find them by ourselves), even with additional comments.
So I'm wondering if there's something we could do to avoid these Wikipedia-based answers? Perhaps, like on Wikipedia, we could ask users to try to mostly use secondary sources?
(Note that it's not a post against Wikipedia (which I like) but against sourcing off a potentially unreliable source.)