To follow up on that, we have tried regulatory measures. We've tried voluntary measures. We tried Kyoto. We've been talking about this for a generation now. None of those have worked, yet we show very clearly that this does work, but it's not enough in and of itself.
Would you agree that the balanced approach that we're taking of having a price and a rebate and having investments in transit, investments in innovation, investments in making our corporations and our society more productive overall, and regulations and emissions controls really provides a basket? We're taking more than 15 different measures to actually deal with climate change. That is the balanced approach to take, so that it's an evolution towards meeting our targets, not a revolution.