I think the first point is that this is a real cost, and part of Adam Smith's invisible hand is that free markets work when they charge real costs. The reason we have too much pollution in the world is that private markets don't naturally capture those costs and it falls upon government to actually be responsible for imposing that collective cost, so that markets work more efficiently, not just for environmental reasons but for economic efficiency.
One of the things I've found is that none of the people who oppose carbon pricing can come up with a more cost-effective way of reducing greenhouse gas emissions. They say that they don't like the cost of a carbon tax, but I've never heard a single one of them come up with a more cost-effective way to reduce emissions. I'm left wondering if they really believe genuinely in reducing greenhouse gas emissions or not. That would be an interesting debate to have.
I think in terms of this issue of how much the public gets it, there's probably some truth to it. I would say there are lots of things in terms of running an economy that not everyone understands. When the governor of the Bank of Canada changes the Bank of Canada rate, I'm not sure everybody, including me, understands all the reasons for doing that, but that's part of the reason why we have government to show leadership.
I think the average person does understand that the world is changing, when they look around them and they see more and more high-mileage vehicles and electric cars on the road, they see when they flip their electricity switch on that it's coming from clean sources, and they see more and more energy-efficient buildings. They see that the world is moving toward a cleaner, more innovative, low-carbon economy and that things are still working fine, that we can make that change, and they understand that we need to accelerate that change. Part of the reason we elect governments is to help them figure out how to do that.
Would it be great if every person understood all the economics of a carbon price? Sure, but part of the reason we have governments is to help make those leadership decisions.