I think some are missing the point of Steve’s question. What he is asking(correct if I am wrong) is how could someone not have ever heard of The Rolling Stones or Van Halen –the institutions? I don’t think the fact that his friend listens to rap, plays into the equation that much. We are talking about being oblivious to a societal institution that virtually everyone is guaranteed of coming in contact with at some point in their life — assuming no cave dwelling is involved. It’s akin to not having ever heard of James Dean or Martin Luther King. They are icons. It’s not like Steve couldn’t understand why his friend didn’t know the name of Superchunk’s last album.