[somenameforme]

This is one of those many issues that can be approached at a macro level. Don't think about this as an argument on the internet, but about the implications. Imagine there was compelling evidence for a environmental factor that might even possibly be controlled for. Do you realize how huge a deal this would be?

Every single parent wants the best for their kids and would do anything for this. We, socially, already spend an obscene amount of money on education and other factors meaning government support to try to turn this viability into a reality would be through the roof - including in endless support on promising research along these lines. And keep in mind this isn't only for black families - there's a significant IQ deficit between whites and East Asians as well, for instance.

But where are these exciting studies on the verge of revolutionizing society? They do not exist. It's kind of like cold fusion. The latest science and research on this topic doesn't really matter. People want to find it and have been searching for decades with promising leads that go nowhere. But if one day they do, you'll know, because it will be something that would have dramatic implications for all of humanity.

[tptacek]

This is just handwaving. Behavioral genetics, psychometrics, and molecular genomics are thriving fields of study (often in tension with each other, so you even get fun Twitter arguments between the leading lights). It's not our fault you made the risible claim that the MTAS "once and forever put to rest any question of race and intelligence".