Daniel A. Albert, M.D. is Professor Medicine and Pediatrics and Chief of Rheumatology at the Dartmouth Institute of Dartmouth-Hitchcock Medical Center. He has published numerous papers on rheumatologic disorders in adults and children, as well as articles on various conceptual issues in medicine and on the use of decision analysis in making diagnostic and management decisions. Ronald Munson, Ph.D. is Emeritus Professor of the Philosophy of Science and Medicine at the University of Missouri-St. Louis. In addition to articles on the philosophy of biology and medicine, his publications include Ra...