Most of the economic studies that I've seen--and I'm not sure about the one Mr. Sawyer is referring to--usually assume that the rest of the world is acting in concert with Canada, or at least there are no major differences in the way we're acting. That's a critical assumption in any of this economic analysis.
If we're projecting out 10 or 15 years and saying that we'll only lose 0.5% or 1% of GDP growth or one year of GDP growth, you have to look very carefully at all of the assumptions that go into that, because if Canada has a policy domain that's significantly different from our competitors, not just in the United States but in many major emerging economies, then the impact is significantly different.