Thank you.
We've looked at this issue together with McKinsey & Company quite extensively. It comes down to risk, and every shareholder in the shareholder base behind these companies has different expectations of risk and return. And so if you look at the building sector, clearly you can get 80% of your efficiency gain in improved operations, the actual better operating of the building itself. It's not to say don't do new technologies, you have to, but it's in the operations that you're going to realize those savings. If you look at other sectors, they're different in the way that they invest in R and D, in what shareholders expect, and so all of that needs to be taken in the context of how you implement a new technology strategy. For some, you will be able to capitalize it very easily and readily and implement it. For other ones, it's going to be a long haul before you get these technologies adopted. Each sector, whether it's transportation, building, oil sands, has its own kind of profile for adoption.