Important decisions about the financing, determining priorities in and
provision of health services depend on beliefs about facts and relati
onships. It is argued in this paper that many popular beliefs are eith
er logically wrong or are not supported by the evidence. Important err
ors exist in the beliefs about the effects of technology and ageing po
pulations on health care costs, affordability of care, capital resourc
es, financing mechanisms, efficiency and economies of scale, the growt
h of litigation, priority setting and the importance of getting people
back to work. This paper aims to correct some of these fallacies and
suggest alternative beliefs that better match the theory or fit the ev
idence.