I don't want to pre-judge the new Cooking SE that just entered private beta, but looking over some of the questions and especially the answers, there are going to be a lot of answers that are based on 'conventional wisdom' and as such will rise to the top.
To illustrate without picking on any particular question here is a made up example:
Q: How long does it take to soft boil an egg?
A: I was always told to boil 3 minutes for soft boiled eggs.
A: I was always told to boil 2.5 minutes for soft boiled eggs.
A: I was always told to boil 3.5 minutes for soft boiled eggs.
Then some one comes along and answers with a fact-based method of determining the correct boiling temperature and duration. Is there a process to promote more accurate answers over subjective answers?
Note: I don't have an answer that I wish was rated higher like this, I'm just interested in the communities ideas about this kind of situation. Accurate vs Popular is often a distinction without a difference in a mainly engineer-type group, but I predict in the new sites will it may become more important.