I think that it's an interesting issue to contemplate. The Bank of Canada governor did speak to the Calgary Chamber of Commerce in September, and he also made the point that it's a very small amount of money, but, when you look to change behaviour, if you go back to the publications of the Ecofiscal Commission by Chris Ragan out of McGill, if there is a desire to change behaviour, a carbon tax is the best way to do it. The issue is how it is administered, how it is applied and where it needs to be considered in terms of the impact it has in various sectors.
As I said at the beginning of my remarks, blanket policies are not helpful, and there are regional differences. There are sectoral differences that really need to be considered in this context.
Having said that, we know that companies have started to model their business cases assuming that the carbon tax doesn't go away, so certainty is a very important part of where we're at right now.