Yes.
Well, I obviously wasn't clear, because what I was trying to say is that when you're upstream you have less industry participation. The further you are away from the markets, especially from a time point of view, the more difficult it becomes for industry to invest, because their models discount the returns that they get, and the longer the time, the less the return in their mind.
So you have to deal with it, and that's why you have a progressive kind of a model.