The chapter differentiates among the standard frame and the Lacanian non-standard frame, pure psychoanalysis and applied psychoanalysis, psychoanalysis and psychotherapy. The experiment and finite frequentism in statistics only engages two types of reason (episteme and techne), while Nous and Practical reason are required for the study of the singular case. Thus Freud would say that for the singular case the observations produced in analysis are sufficient. The singular case observation does constitute a test and an evaluation of the theory and the practice although it may not produce the propensities of a random sample and statistical testing. What is important here is not the obstinate or dogmatic insistence on the psychoanalytic method, but the logical argument regarding the import of the singular case for the study of human subjectivity and the existence of different types of rationality.