I would briefly offer that I think in terms of the choices we make, as Mr. Cleland alluded to, strategically it's important that if Canada is to retain a sense of energy security based on having indigenous supply, then the tar sands development has to go ahead. Our conventional basins are shrinking in terms of production, so we have on one level a challenge with respect to having our own indigenous supply of crude oil versus being dependent, like so much of the world, on the Middle East or other highly vulnerable sources. So I would look with great care at not upsetting that rather advantageous situation in Canada.
Secondly, the polluter, in the sense that you speak of, will pay, because whatever requirements emerge from our climate change strategy technology will be what will be required to solve that problem, and that technology investment will be made by the companies active in the oil sands. What benefit will accrue from that remains to be precisely seen, but all of us, whether we're electricity-dependent, in some regions on coal, or we're developing more global warming gas-intensive oil options, we will deploy technologies that will raise prices--make no mistake about that--in order to achieve whatever is decided is the requirement for dealing with global warming gases. So it will happen, in my view.