We pay attention to productivity because of course that plays an important determining role in the potential of the economy, how fast we can grow on a sustainable basis. It's also the source of most of the economic progress or material gain that we experience. As we're more productive, we expect our salaries, wages, and profits to go up, so that's the major source of growth and economic well-being. So that's important.
You asked a slightly different question that had kind of a twist on it at the end; that is, whether interest rates as set by the Bank of Canada have an effect on productivity as opposed to whether productivity has an effect on how we set monetary policy. That's a little trickier question. You could think, well, low interest rates would encourage investment and capital deepening and that would be productivity enhancing. As far as the analysis goes, that's okay, but of course that doesn't go far enough. If the suggestion would be to lower interest rates as far as you can to get productivity and investment as high as you can, you can see the potential problem there. To the extent that it led again to inflationary outcomes and higher risk premiums, you'd actually, in the event, wind up driving interest rates higher rather than lower in the end.
Our policy—and we return to this again and again, I know—this low, stable, and predictable inflation, is a key for keeping interest rates down on a sustainable basis and doing what we can, in our way, at the Bank of Canada to promote productivity and growth.
As an aside, with reference to the dollar, because this committee is of course talking about the strong dollar, one of the things that we've noted in our monetary policy reports, and that has been noted by others, is that an advantage of a strong currency is the cost of imported machinery and equipment, which is important for this capital deepening process. The price of those does go down, so you can regard that as potentially productivity enhancing.