David Anderson is a neurobiologist who gave a talk arguing that the brain is too complex to be treated like a "bag of chemicals" by psychiatric drugs. He demonstrated that different neurons trigger different reactions in separate brain regions, so modifying the entire brain uniformly is ineffective. This "pour it all in" approach also causes dangerous side effects. Instead of this blind method, he advocates studying similar animals to determine the specific sources of problems and develop more targeted solutions. While rats and fruit flies provide an accessible model, he remains curious despite uncertainties about their emotional experiences.