Derek will probably say a bit of the same thing that I will.
Regulation has an extremely important role. Policy, I will say, is fundamental moving forward. When you're trying to change the equilibrium in the economy to move from one type to the other to introduce more products, to introduce biofuels, etc., you will need that accelerator in terms of policy to get us there. That's fundamental. Now, on when and which one and how, etc., there is a lot of debate, but it's needed to make a move.
Derek, I'll give you the ball.