Maybe, sir, I'll just start.
It's true. You've seen graphics. There are similar types of graphics in budget 2012 on what will happen to the old age dependency ratio. We're all finance economists. We can calculate what that would mean to potential output and budgetary revenues. Canada still faces this challenge. Again, we are talking about a fiscal plan today, and we're basically saying that PBO numbers, the Government of Canada numbers, are effectively the same over the medium term. We're talking about Canada getting to a structural surplus in the medium term, and then we project forward from that.