AFTER ARGUING THAT LAUDAN’S ACCOUNT OF THE ROLE OF CONCEPTUAL CONSIDERATIONS IN THEORY APPRAISAL IS INADEQUATE AND UNSATISFYING IN A NUMBER OF RESPECTS, I SUGGEST SOME OF THE WAYS IN WHICH WE MIGHT MOVE TO DEVELOP AN ALTERNATIVE ACCOUNT. THIS ALTERNATIVE PRESUPPOSES A PROBLEM-SOLVING METHODOLOGY AND, UNLIKE THE LAUDANIAN APPROACH, AWARDS A CRUCIAL ROLE TO EMPIRICAL RESEARCH IN THE RESOLUTION OF THE CONCEPTUAL PROBLEMS TROUBLING A THEORY. THREE WAYS IN WHICH A THEORY MAY ENHANCE THE CONCEPTUAL RESOURCES WHICH IT SUPPLIES (...) FOR EMPIRICAL PROBLEM SOLVING ARE CONSIDERED: THE FINE-TUNING OF THEORETICAL CONCEPTS; THE APPROPRIATION OF THE CONCEPTUAL RESOURCES OF THEORIES IN OTHER DOMAINS; AND THE ACHIEVEMENT OF GREATER CONSILIENCE. REFERENCE IS MADE TO SEVERAL HISTORICAL CASES IN WHICH SUCH ENHANCEMENT ACTUALLY OCCURRED. (shrink)