ok - in that case: when I switched to a white collar job suddenly all the world's knowledge was unlocked in my brain, and I knew the meaning of all these terms that had heretofore been opaque to me.
Some exceptions I've seen are people like my mother who grew up higher-class but 'defected'. Another exception is occasional disabled members of the working class.
It has nothing to do with the intelligence or ability of the working class as a population and everything to do with the fact that people in that class who have certain abilities and types of intelligence are offered a way out that others aren't. (e.g. A mechanical genius is less likely to get this treatment than a kid reading several grades ahead ).
well probably because I have learned more esoteric knowledge than almost anyone I know despite having come from poorer circumstances than anyone I know, and I learned it while being poor.