Thank you for the questions, Mr. Trudeau.
Let me start with your point on technology. I think it's an important one and a good one.
We don't know what the breakthroughs are going to be. There may be some fortuitous breakthrough that allows us to have lots of energy and low emissions beyond the stuff we already know. But it's important to keep in mind that going to the moon had no price tag on it. The Cirque du Soleil man spent $30 million to go to the space station, so I don't think that's a broadly applicable technology for most of us.
With the Montreal Protocol, of course, the companies came up with the solution and they were able to charge their customers the higher cost for the substitutes for the ozone-depleting substances. Those are quite different from what's required in getting rid of carbon dioxide.