Depressing Insight. In my work, the equivalent of the great filter, or for sci f

Depressing Insight.
In my work, the equivalent of the great filter, or for sci fi nerds, one of the Nth Crises, was the failure of the prewar successful eugenics movement to expand across the world because of the nazi abuse and postwar consensus demonization of it because of that abuse.
This isn’t a matter of my preference or judgement, it is simply a matter of calculation. I don’t have to like these things. I just can’t lie about them.