Cumulative Record. Chapter 9: A Case History in Scientific Method. Quote 17

When you have the responsibility of making absolutely sure that a given organism will engage in a given sort of behavior at a given time, you quickly grow impatient with theories of learning. Principles, hypotheses, theorems, satisfactory proof at the .05 level of significance that behavior at a choice point shows the effect of a secondary reinforcement—nothing could be more irrelevant. (p. 121)