There's a very solid theory that folks that migrated north needed to evolve more learning ability and less impulsiveness to survive winter, which correlates perfectly to that part of the brain. The fact that globalist border-erasing is set to submerge that phenotype in a flood of genetic mediocrity makes me thing they're lying to OP. They (or whatever malicious entities they work for) credit Damballa with creating nice places where it snows, as opposed to the obvious evolution snow caused, because they don't want people to know that they should be defending their genetic stock. It could be Yaldabaoth using dysgenics to trap people in vessels less capable of facilitating escape.