I guess the view that I would bring to this is that it's our environmental problems that need to be addressed. We've talked about externalities. If doing something creates costs that are not borne by anyone, I think it is incumbent upon the policy framework to make sure that it is addressed. That said, we also have a responsibility to make sure that if this is addressed, it's addressed in the lowest cost way possible, to deal exactly with the issues that you've raised. There's no point in imposing too large a cost to deal with a specific type of problem when there are cheaper ways of addressing the issues. What the policy framework that we put in place should do is to look for those cheap ways of addressing the problem.
On May 9th, 2016. See this statement in context.