I take your general point (and between you and groby_b, I feel like a lot of my concerns were actually addressed), but for the life of me I really don't understand the fact that people keep replacing "someone" in my hypotheticals with "White people". I didn't say anything about a white person staying out of jazz due to black people: the person in my example could've been white or non-white hispanic or east asian or middle eastern or native american or aboriginal or south asian or...