I remember when teachers in school use to tell us that Wikipedia sucks because there in no scientific peer review. They couldn't wrap their heads around the concept of casual crowdsourcing.
replies(1):
I'm sure they could, most teachers aren't idiots. And they were correct that "casual crowdsourcing" is not a fitting replacement for peer review.
And in fact, the current moderation policies for Wikipedia only work in so far as they use peer-review type processes, such as requiring "notability" and multiple sources, and preferring expertise in a field. Of course, if you're in a relevant field you shouldn't use Wikipedia as a primary source since you would presumably have access to whatever sources the wiki itself cites in the articles.