I do think advertisements make a difference. For example for a given health condition if the advertisement says X is cutting edge, then automatically the patien

I do think advertisements make a difference. For example for a given health condition if the advertisement says X is cutting edge, then automatically the patient who receives something else from this doctor would think he is not receiving the best medication possible. This also explains why VISA and MasterCard advertise so much when you as a consumer simply take whatever the bank offers you.