The author comments on the article "The Primacy of Cognition in Schizophrenia," by R. W. Heinrichs and states that to the pursuit of schizophrenic/normal differences, there is no end. Heinrichs used meta-analyses to argue persuasively for the primacy of cognition for this role. His conclusion not only elicited agreement from both researchers and practitioners, but it is supported by his quantitative estimate of those differences through the use of meta-analysis and the associated effect sizes. An interesting question is why cognitive behavior should be so effective in differentiating schizophrenia patients from normal persons. The current author believes one answer is that cognitive behavior involves complex stimulus control.