Thank you for that question.
I am mindful of time limits, but I'll start with just the broad question that you raise. I guess I'll just preface this by saying that obviously this is not a new tool. This is a well-established tool that's been in place—by many metrics, successfully—in Canadian jurisdictions and around the world for well over a decade, and the approach that the federal government is taking on this is aligned with those approaches.
I guess I'm always mindful of flagging that this is an important tool under the pan-Canadian framework, the national plan, but it's not the only one, so it's not always the most effective way. It's complemented by a range of measures, and they're based on evidence from other jurisdictions where this has been in place for a long time.
We know that a price on carbon pollution creates the incentives and the price signal to change behaviours. What it doesn't do is prescribe where those reductions need to take place. It doesn't tell industry and individuals the how. So it enables people to make choices about whether and how they reduce emissions, but in a way that makes sense for their particular circumstances.
You raised a second point, and I apologize that I might have missed something, but you asked about the underlying principles of the system that the federal government has developed.