They really believe Nature over Nurture
Random thought.
Both "sides" of our national-suicide Establishment claim to believe egalitarian nonsense. Both will insist that humans are identical at birth, and differences arise because of external factors. The "sides" don't pick the same external factors (one picks marriage, the other picks education) but they're both stubbornly wrong, solidly anti-reality.
And yet when the political rubber hits the road, both "sides" show that they
solely trust innate differences.
If they really believed in external factors, they'd use carrots and sticks that would
persuade the entire "identical" population. They'd propose actual solutions that would improve life for the majority of Americans.
But they
don't have to do that, because they know exactly how each ethnic and economic type will vote.
In state and local "elections", they draw districts to contain only one type, thus guaranteeing the correct result.
In presidential "elections" (i.e. Florida "elections"), there's only one district, and it's permanent. They can't redraw the borders of Florida, so they resort to chemical engineering. They know exactly how each ethnic ingredient will affect the result, so each "side" tries to open the valves from the tanks containing its own ingredients, and each "side" tries to shut the opposing valves.