Thanks for that.
My next question is for Mr. Plumptre.
You mentioned in your opening the importance of things like the clean fuel standard and other policies to ensure that we're not picking winners and that we're going to have a portfolio-based approach and have the certainty for investment going forward in some of these lower-carbon products in the future.
My question to you is this: What risk do you see to investment today in the technologies that we're going to need for this type of a low-carbon future when you see other parties perhaps putting out policies or suggesting policies that would be less ambitious or that would eliminate some of these different mechanisms that are proposed?