Obviously one of the barriers would be the availability of materials. Mr. Wong spoke to that.
Mr. Fournier, based on the challenges we just talked about, it's interesting to me because I hadn't really contemplated achieving energy efficiency through pure architecture. We've heard numerous times at this committee, from different panels here, that private industry and innovation is outpacing government. We know that codes are more guidelines than strict regulations. Then you have the jurisdictional issues, where the provinces and the territories can take what the federal government offers and either exceed it or not exceed it. They can go below it. What are some of the things you're doing in the architectural world purely for energy efficiency?