It's actually more useful than that. Even for queries with objective, straightforward answers, if I get a search result with a Wikipedia article and a quora answer I almost always go with quora. The Wikipedia result is an article written by a faceless group of people and there's no way for me to gauge the quality other than included references (which are very hit and miss on a good number of articles). The quora result is a variety of answers from a bunch of people with real names attached (in most cases). I can pick which answer I think feels more authoritative or detailed, or mix and match answers. I think having a real name behind the answer and each answer not just being a mishmash of contributions from anonymous sources results in higher quality answers I can trust (or at least make a decision about what level of trust I want to have in the answer which is very helpful when you're getting answers from the internet). Also having a bunch of answers to compare and contrast instead of just one definitive answer actually helps