With yet another IQ-related heresy hunt in the news, I am linking to a couple of earlier posts which arose from my own experience of a mini-IQ-related heresy hunt almost exactly 5 years ago as a result of this:
which I later reflected upon here:
What the experience caused me to realize was that the Left CANNOT be honest about group differences in hereditary IQ, because almost the whole Leftist project since the mid-1960s has been based on lies; and especially the lie of the equality of all groups in terms of ability and attributes - since, with this lie in place, all inequalities of outcome can be blamed on prejudice and evil repression.
This is the lie which justifies almost everything about the Left and what the Left does.
So the Left can not give up the IQ lie without losing everything.
(I mean 'everything' in worldly terms. Things look different from a Christian perspective.)
I've explained this a bit more in the Thought Prison book -
and also here: