Uh huh. Well, your belief or disbelief affects nothing. Watch and see. The brain damage appears to manifest in a variety of ways, but psychosis, dementia and schizophrenia, personality changes, and heightened aggressiveness are certainly some. Also damage to the speech center of the brain and involuntarily speaking gibberish, like those reporters and Judge Judy, and people I have encountered around town. Might expect to start seeing a lot of mass shootings and the like as people devolve, as their neurology suffers damage. Oh, that's already happening? I'm shocked, I tells ya, shocked!