Social mobility is a myth, specially between the super rich and the middle class or the working class! As far as, a section of workers rising to middle class is concerned, happens during boom period but shrinks during recession periodically!
This, by any chance, does not alter the nature of capitalism, exploitation of working class, peasants or periodical recession, which is happening since 250 years or birth of unemployment, ignorance, superstition and rise of few of political & religious parasites!

That was my comment on this post, ”

China overtakes US, now has world’s largest middle class

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