Yes, very fair question. Maybe let me use an analogy. If you win the first 2 games of the World Series and you're about to start game 3 and you're up against a superb team that made it all the way to World Series, you don't look at the rearview mirror and say, "Well, we won the first 2 and therefore it's 80% probable we're going to win game 3." You say, "Against a tough competitor, you win some, you lose some, but you don't win them all." And I think we have to look at our never-ending battle, if you want to call it that, with private payers to say that, "Yes, we've been able to hold the line," in part because our entire industry needs to subsidize the government, and so it's a common plight. But whatever the reason, we've had a couple of good years. We just think it would be inappropriate to, therefore, by -- based on that rearview mirror, pretty view, get overly confident about next year. Separate from that metaphor, which I think is important, but beyond that, it is also just a case that there's a lot going on in the commercial sector and many of you are more facile in discussing it than me. But it's -- and players are getting more and more creative with what they're doing on benefit design. They're getting much more open to doing different things, with exchanges and narrow networks just being one example. And so when 10% of your patients drive, whatever, 115% of your profitability, I'm not going to get the exact number right, but the subsidization of the Medicare program is substantial from the private sector, that you've got to pay a lot of attention, because relatively small changes can wreak a lot of havoc in your year-over-year momentum. And so I would posit and we would posit that the world is different in '15 versus what it was in '14. And if you had to say, does it lean different harder or easier? You would lean harder. And in particular, for us, because the way it could show up is that not we lose rate, it's that we lose share to other people who are willing to cut rates. And that's something that we can't control.