If there was study that found a population of boys with abnornally high levels of autism when compared with years before, who only recently played with plastic dionsaurs at a certain developmental stage, to the exclusion of human interation for better than a quarter of their waking hours for years, then there would be a valid concern in examining the value of plastic dionsaurs either for their chemistry, or for the pattern of action and perception that impacts their brain function. There is no correlation between play with a toy and autism. There is correlation between television and autism. It could also be the chemstry of the carpet that they sit on when they watch it as much as anything else, but the correlation bears investigation.