>It is the most secret scientific discovery in biology. Nah it aint the 500th most secret scientific discovery in biology. Even if you can show that rando black jizz is ending up in white lady brains, it is so miniscule as to not have a sufficient effect on neurology. Maybe it could affect immunological response. But 1 cell in a thousand is not going to affect thinking. Thats why they looked at alzheimer brains. They noticed that women who had children had more alzheimers and that is increased with every child so they wanted to see if pieces of *baby* were fucking up mom’s brain, but they didnt find evidence of that. You wouldnt have to show that dad’s jiz got through the placenta. Initially there is a blastocyst that could pick up spermies either around the time of conception or soon after implantation. So you could have your own dad’s jizz inside your brain. Wouldnt have to cross the placenta. I just dont think unfertilized sperm can replicate, so it probably just dies. But Im not a microbiologist.