Thank you.
Carbon intensity is a relative indicator. It indicates nothing with regard to the total quantity of greenhouse gases emitted. As Mr. Boyd said, we in Canada have increased our emissions by reducing our carbon intensity and, if there are no limits, carbon intensity can serve no other purpose than drawing a comparison with oneself.
Furthermore, carbon intensity isn't a guarantee that atmospheric pollution will be reduced because a number of other phenomena will contribute to smog episodes or atmospheric pollutant emissions. In addition, certain measures to reduce atmospheric emissions can increase greenhouse gas emissions. Once we've looked at that, we conclude that carbon intensity therefore isn't an end, but rather a means.
The second element is that the carbon tax isn't a universal tool. It's one tool among others, and it must be combined with others, but it's a tool that has the advantage of demonstrating a clear political will, of being simple to use, of requiring little investment by the government and of needing relatively little control. In addition, as Prof. Boyd said, it can be used intelligently and creatively to redistribute this wealth in the Canadian economy, to help reduce inequalities that are created and, in particular, I would emphasize, to raise funding for research and development because, from a global standpoint, this program must be put in place for a number of decades.
If we immediately stopped increasing our emissions and even if we stabilized them, it would take at least two centuries for the climate to stabilize.