The studies conducted in past to treat the chest pain in 1950s are very useful in explaining the crux of the article named The power of Price, Why can't a 50 cent aspirin can do what a penny aspirin can't. The chest pain in earlier times was treated by angina pectoris process. This procedure remained in practice for 20 years. Dr. Cob and fellows questioned the effectiveness of the process later and tested its effectiveness by performing operation on half of the patients and faking it on others. Both the groups of patients provided satisfactory results at least ...