We're basing an awful lot on our capacity to scale up, although we know that there are huge unknowns that are going to kick in as soon as we get there. There really is no overall sense of the impact of the oil sands on water and where we're going to be in 50 or 100 years. Well, maybe we can get an overall sense of it and be concerned, but there are no facts around it. Until we get to the long-term time, we can't know what's going to happen.
