Shawn...I think he's more critical of my comments, and more in agreement with yours. I will agree that autism is a pervasive developmental disorder, but I will disagree with the comment that it is purely a neurodevelopmental condition. There is copious evidence and research to support the fact that there are non-genetic (environmental) markers in many cases, and there is still quite a bit that is unknown with regard to the etiology of this condition. As Shawn stated, if we find out in 10 years that autism is statistically more prevalent in households that used a certain type of toothpaste, it will demonstrate the huge array of possibilities that can be attempted to be accounted for.