Trust me, I'm far from an expert on the subject myself, but anything dealing with the brain is akin to string theory: no one person on the planet can possibly be an expert on all of it. There is a bit of savant quality with some autistic children, but it generally manifests in the kids in the higher end of the spectrum than my daughter.
We do know a couple of things about Autism, even if we do not know the exact cause. It is definately not caused by vaccines or Thimerisol. Autism rates have not in fact been increasing, but the definition has been expanded in recent years and the increased number is largely an artifact of this broadening of definition. It looks like it is most likely a genetic disorder, but studies are still ongoing. And no BlueAngel, that is not my opinion, but fact.
If you are not part of the solution, you are part of the precipitate.