Years ago through some church work I was doing, I was briefly acquainted with a woman whose father and grandfather were the same person. She was a genetic mess and made her meagre living as a prostitute in a horrible rundown neighborhood. She had children who were not the product of incest, so while some of the bad stuff was diluted, they all had their issues. I was a young man then and, to say the least, I had my eyes opened to a sad and tragic world that I had no idea existed.
I wonder if the “sexual revolution” which started years ago in which married men and women both were having affairs has contributed to the lowering IQ and mental instability of so many people in our nation? A couple of decades ago, it was men and women meeting at their children’s sporting events, having an affair, and then the resulting child was assumed to be the husband’s child. Then, in small communities, the children go to school together while not realizing they are half-siblings, date and eventually produce another child that is a product of unknown family gene-mixing. Now, there is no marriage but instead “hook-ups” where no one knows who the father actually is for resulting the child.
I know that decades ago, one had to have a blood-test prior to getting married to make sure than the couple were not related although they coined it as testing for STD’s. A county official told me that was the actual reason for blood tests, although she might have been joking.
Of course, the decreasing IQ levels are more likely to be from uncontrolled illegal aliens from low IQ nations streaming across our borders and producing children who have no structure in their lives and provided no education. But the other possibility may have some merit.