It would be helpful to have the experts here.
I can tell you that the data sources for the model, which are the foundation of the analysis, come from a number of sources—everywhere from Statistics Canada to other federal agencies—so that we have credible and consistent data sources. They're run through the model. It is a general equilibrium model that produces both economic and emissions outcomes. When they run scenarios, particularly when we do regulatory impact assessment, they can look at the impacts on the economy and the GDP.
The key is to have a credible model, consistent data and credible assumptions. We try to be very transparent with that. We do release publicly our big analyses, in terms of both our emission projections and the regulatory impact assessments for each of our regulatory measures.