My colleague says I can't answer that, but I think I can answer it.
First, it's impossible to get there by 2008 and 2012. That would be the point I would make.
Even if Canada did everything possible, it couldn't do it by itself. If the United States doesn't do it, and if other major powers around the world don't move in lockstep, then you still have a problem. Why would we jeopardize everything that Canadians hold dear while others are going merrily along their way?