Scientists most recognize other kinds of evidence. Interests trump evidence. Health interventions always increase someone's income. Any advice to reduce service is likely to be ignored. Science isolates and health connects.
Methodological rigor favours the particular.
Health and sickness involve the multifaceted and interconnected. Science addresses a problem, not the problem. As a longtime and reluctant participant in socio-scientific controversy about mammography screening and about silicone breast implants, I found Lewis' theorems brilliantly insightful. Dr. Donald Redelmeier, an associate professor at the University of Toronto and a practising general internist, talked about fundamental errors in clinical decision making using insights from cognitive psychology. One example was how treatment decisions were influenced according to whether relative or absolute risk reduction was incorporated in the text of the question.