When you talk about the upstream emissions, it's important to count them all, as you say. Those are both process emissions and things like methane, as well, that I mentioned.
If one is designing a cap around a specific sector, I agree with the comments of the other witnesses, that it should focus on the emissions from that sector, and that the majority of the use of that product and the emissions that arise from the combustion of fossil fuels should be addressed by other policies that target that consumption.
As I mentioned in my opening comments, I believe that we are starting to finally see some global traction on that point, and that's actually.... I would echo something that Professor Jaccard said about the need to consider the fact that we may very soon see a decline in demand for the consumption of Canadian oil and gas arising from that.