carefully and they're now out of the picture. we need to focus on other issues. that's where we need to put our research. >> other research in what areas? what's the most promising? >> a whole array of genetic predispositions as well as other environmental factors, whether they are chemicals in the environment, things in our food, perhaps. could they interact with the genetics? >> okay. what about -- i don't know if you heard about this as report in the associated press that a new pill is studied to treat fragile x syndrome, a genetic disorder that may cause forms of autism. >> i don't know anything specifically about that. there are a lot of people now, once again, focused on trying to find out what the real causes of autism are. >> what do you say to parents and family members of autistic children? what do you think they should focus on now? again, these people are very passionate about it. many people believe when they gave their child a vaccine that's when the child started