It’s one of those topics where there’s a kernel of truth, but most people who insist women or Black people are scientifically different are not doing so out of any interest in science. So the small percentage of people who just want to make a valid point get lumped in with the much larger group, and unfairly tarred.

Perhaps because, to many people, it seems wrong to set policy based on marginal differences in the aggregate when the policy will affect individuals, and also because people doubt the motives of those who are highly invested in proving a scientific basis for negative stereotypes.