I have one last question to Stewart regarding carbon pricing. I have a hard time trying to figure out what the actual number should be for carbon pricing, and it seems like a lot of people are taking a lot of guesses in terms of what it should be. Carbon pricing is not on its own. It's dependent on what else happens. If we're going to meet the target for the long run, in 30, 40 years, we can't put a number on it until we know what else is involved to try to reduce the carbon issues.
Is that correct?