But let me start with your second issue. There's no question that the characteristics and the challenges facing individuals who are 50, 55, and 60, versus 70, and in the workforce, are quite different. But that's one of the reasons I also emphasized the issue for persons with disabilities, because people pick up a variety of limitations as they age.
I'm going for another checkup of my eyes; I think I'm going for trifocals now.
So it's just the reality that their situation will be fundamentally different.
From a labour market viewpoint, I don't know that it's particularly productive to try to draw tight lines around 55 to 65, or 65 to 75. We have grown up with a mindset of 65 being some kind of a magic number. I think all of this is very fluid now, and we simply have to get away from those definitions, because they really affect the way we view the policies that we'd like to think about and implement. It's a tougher problem to think about the labour force being more fluid from an age and participation viewpoint, but I think that's where we have to go.