I checked the link to see if this happened in the United States or some other country but saw no text, weird. If this is happening in the you you you.S. My first question is, "WHAT"?
Marijuana is illegal and even if the medical stuff is legal, the kid is only 9! His brain is still developing. Treating a child with a brain disfunction with a drug that can seriously hamper the function of brain development seems like a bad idea to me.
Edited: Oliron on 29th Jan, 2010 - 2:40am
It's a terrible ide just because it's way too addictive and to start from young and turn your kid (autistic or not) into a dependent just won't allow the child, in my opinion, to develop character skills of his own.