Sure.
When we did the economic study in 2008, it was comparatively easy because we made a lot of assumptions without knowing the outcome of the negotiations. You can assume that all tariffs will be eliminated, for example, whereas the actual negotiated result will be much more nuanced. The same thing applies in services, government procurement, and other areas. When you're doing a study without knowing the final detailed results, it's easier to do. To tailor it in a way that you can actually capture the finer nuances of the final agreement is an extremely difficult thing to do.
Having said that, we will be doing a final environmental assessment of CETA—we're working on it at this point, but it will take a number of months to complete—that will have an economic assessment as part of it in order to conduct the environmental assessment of the impacts. As I mentioned, though, that is a ways ahead of us.