Well, that does explain a lot of things.
http://organichealth.co/a-virus-that-makes-you-stupid-has-infected-up-to-12-of-humanity/
Perhaps I should add a rider to this as it may be a serious condition. I will say the same as the article does:
“Okay, now before you start pointing to some of the “dimmer light bulbs” in your life – take note that no one truly knows how humans contract the virus, or how much it really affect broader populations. This particular study was done in Baltimore, so there could be other environmental factors in play. What the study does show, is that we are still learning, every day, new things about our bodies and the world around us.”
Not Something Else 
Interesting. I’d say all our politicians are infected.