That's true to a large extent with pharmacological drugs, since you have huge variability between people's weights, life style and diets (alcohol use for exampl

That's true to a large extent with pharmacological drugs, since you have huge variability between people's weights, life style and diets (alcohol use for example). Usually the problem can be mitigated by starting with a safe low dose and adjusting until a benefit is seen in either case. The profit motive of pharmacological companies is to have repeat customers. So no real incentive to cure. You can't really dismiss this as a concern, as it's reflected in reality. Americans are some of the most drugged people in the world. The number of drugs Americans are now taking is growing exponentially. Yet this hasn't translated into life expectancy gains at all. If anything, chances are you will be given the most drugs in the last year of your life. The risk of complications from taking so many drugs, will probably be working against benefit. As you get worse, the doctors will try to increase the dose. A feedback loop of sorts. Hey, it's not like I'm against modern medicine. It's just it's a little more complicated, when game theory comes into play and individuals/companies have incentives that aren't always aligned with your best interest.