It is not the same as wealth, but I know absolutely, positively that in less than one generation an ambitious black youngster from a poor family can have a salary, on average, equal to a slacker youngster from a rich family.
This is from a study attempting to show that it is more difficult for ambitious blacks to rise from poverty than it is for a rich slacker to fall from wealth.
The net result of the study was to show that a few percent of poor blacks, in spite of going to college, remained poor. And a few percent of rich slacker young people remained wealthy. But a huge percentage of ambitious blacks rose to incomes greater that the huge percentage of white slackers. In less than one generation.
Sorry, I didn’t bookmark the study and can’t find it. But it really did happen.