"Black Americans receive about 7 percent of the doctoral degrees awarded each year across all disciplines, but they have received just 1 percent of those granted over the last decade in mathematics."
https://www.nytimes.com/2019/02/18/us/edray-goins-black-math...
And this is the current production! You don't want to see the statistics regarding the number of African American faculty members in mathematics!
So what else is our current system perpetuating besides inequality? What exactly are we "weeding out" in calculus? Or college algebra?
We don't let kids trust themselves intellectually in the classroom.
> If kids from disadvantaged backgrounds are not shown how beautiful and useful math can be, what motivation would we expect there to be that could carry them far enough in the subject to get a phd in it?
Right, and the current homogenized curriculum is not great at inspiring very large swaths of the population. It is pretty good at 1) letting people not very interested in mathematics become teachers of mathematics and 2) lining textbook publisher's pockets.