I think having a stable policy around climate change is what is most important. That policy will have to encompass some element of carbon pricing, however that's chosen, whether that's through a mechanism like a carbon tax, or a mechanism like a cap and trade, or some other mechanism. Frankly, as industry, we're somewhat agnostic on that, but absolutely, having a well-understood expectation of the future of carbon constraints is going to be important to developing these projects.