The downside of being on the emotionally charged asshole side of the skeptical spectrum is that detailed explanations aren't really your baliwick.
So sometimes you need to piggyback on someone else's measured explanation.
This pair of videos KICKS ASS. I'm not even going to say more. Just watch:
Now that I've learned all that I have to note that there is a distinct correlation between Jim Carrey trying to play serious roles and the rise of autism.... I'm just sayin'!