Meanwhile, a quick thought on cost control: When talking about costs, folks need to distinguish whether they're talking about getting more value for each dollar or reducing total spending. The two might not be the same. Prevention, for instance, gets far more value out of each dollar. But if it keeps people alive a whole lot longer, that's more time for them to contract various illnesses, and when they grow old, to die from something expensive. So though prevention may mean our health dollars are doing a whole lot more good, it may not mean we're spending less as a total percentage of GDP. Conversely, we could outlaw coverage of statins, which would save some money, but kill a lot of folks. Now, I'm not saying the two ends are opposed. Indeed, getting good value is probably a complementary goal to spending less. But it's not the same thing.