I recall when I was in grade 11, my teacher of Geography told the class, or was it just a few male students, something I've never forgotten. He spoke of how that generally, guys are attracted to girls who are similar to their Moms. In other words, if a guys mom is tall and slim, he'd be more inclined to tall-slim women. He said, the majority of men marry women who are like, in apperance and build, to their mothers. He mentioned that it was the same for girls as well. Girls with tall fathers tend to like/prefer tall boys etc. Well, I think he was right.
I think it applies to other areas aswell. My father is always explaining stuff to my mother. From what bluetooth is to whats wrong with the car to current affairs. And my mom is always attentive and interested. I can tell they both thoroughly enjoy it. My brother and I usually explain stuff to my mom as well, and I don't know about him, but I certainly enjoy it.
I suspect therefore that if I have a wife who "knows alot", it'll be a point of contention for a while atleast. Everytime, I try to explain something, she'll say something like, "I know" or something and i'll soon realise there's very little I know that she doesn't. Or perharps, unlike my mom, if my wife ends up being one who is not really interested in details or trivia, they'll be a big problem, definately.