What's interesting is that if you look at the modelling around different types of taxes and carbon pricing and how they lead into greenhouse gas emissions, you'll see a very good example is the recent report from the National Round Table on the Environment and the Economy. Almost all of the gain over time is due to turnover of capital stocks--at certain points in time businesses need to buy new equipment, consumers need to buy new cars, and things like retrofits happen.
Having a price on carbon that is rising over time gives a signal and it changes the decisions made at those junctures when the capital stock needs to turn over. So over the course of several decades, you then get to essentially the types of targets that the federal government itself has set out, largely on the basis of capital stock turnover. Anything we can do to accelerate that is welcome, from my point of view.