Things I don't understand department.

So in the things I don't understand department are these commercials for the Cypher Stent. (You know those tubes they stick in your arteries so you don't die.) First of all I don't understand how it is beneficial for a stent company to advertise on regular t.v., as opposed to lobbying doctors to use them. I mean do people actually go in and say, "No I don't want that bootleg stent, I want the Cadillac of stents, the Cypher Stent!" Perhaps they do, but it seems kind of silly. I am going to trust my doctor to choose my stent, not some commercial with old dudes running up stairs and riding horses. I feel the same way about prescription medication commercials. They always say, "Ask your doctor about xyz..." I can just imagine all these people going to their doctors, having no idea what the medication is for, and asking their doc, "Say Doc, shouldn't I be on Cealus (SP?)." and the doctor going, "Well Jane, I don't think it will help with your osteoporosis." And why are those old people in the Cealus commercial sitting in side by side tubs outside? Who has tubs in their front yard? Weird.