Well, I'm not afraid to take it on.
It's difficult, when you've been working on this issue so long, to hear the same things that we've been saying for 15 years. How much capital stock turnover do you think we've had in the last 15 years? It's always portrayed as the future, the future, the future. We've had a huge amount of capital stock turn over, so I would argue that in fact we need to do two things. One is that we have to understand the cost of this issue to this country. That's why adaptation is actually a value. By understanding the cost to this country, we start to understand the social cost and we start to impose regulation that takes us up to that price.
I think if we want to follow a route that looks at the question of establishing caps at a provincial level—that's what we did on acid rain—set your caps and let the provinces go. Establish a national emissions trading system. That's an option for going forward. It may not be the only option, but it's an option.
All I can say is I've heard John's speech and Nancy's speech. I could pull out the previous speeches from 10 years ago or 12 years ago. We really simply need to move now. Capital is turning over every single day. Set your caps, put an emissions trading system in place, a real one, a cap and trade system with no price assurance mechanism, ensure we can link, for liquidity purposes, to other regimes around the world, and let's go.