I think that's a good point philosophically. Oil sands mining is a human operation. Humans always undertake operations without knowing the full consequences of them. That's simply a fact of human nature. What we've relied on so far, I would say, is the operations aspects. Presumably Alberta Environment and the Alberta Energy Resources Conservation Board can tell you if the current operations are causing or not causing an unacceptable environmental impact. I think when you move into reclamation, because there's been little actual reclamation--the end-pit lake concept is not yet proven--there are large uncertainties going forward.
