On the other hand, there are plenty of red flags that link developmental disabilities to things like lead and mercury and pesticides and air pollution and certain kinds of unhealthy foods, and that's what's begging for a comprehensive and definitive study. We should have a long-term prospectus study that looks at all, you know, exposures, medications, life habits, etc., pollution, and traces people over a period of many years, starting with when - starting with their parents, from when they are healthy. This is how we learned what causes heart disease.