The reply by Cook and comment by Chao demonstrate Kuhn's thesis that different scientists place different values on different components of their common discipline. This fact is demonstrated by first succinctly summarizing Cook's and my original points within the framework of a simple choice...

In a recent article, Cook conducted a Kuhnian analysis of the difference between the Textbook and LSE econometric approaches. This paper uses a semantic conception of theories (Suppe 1989) and a finer gradation of the theory of reduction process to clarify the apparent puzzle that exist between...