Yes, I fully agree with that.
There is an interesting reality today that 45 national jurisdictions and 25 subnational jurisdictions have a price on pollution, whether it's a tax or an emission trading scheme. The most effective at emission reductions are those that have them jointly. Certain jurisdictions are essentially applying that recommendation, to have the joint system in place, which drives emission reductions and also enhances the economy in two fundamentally different ways—the tax and the ETS.