Well, I mean, overall we're looking at upgrading systems throughout the network. We're looking at $350 billion in investment over two decades to make sure that the system we're building for the future will be more efficient and able to meet our requirements in the future.
Yes, technology from the 1950s and 1960s is not as efficient as the technology that we would be building today. That's the first part. The other part is, of course, that yes, demand will increase, but when is that demand going to happen? If we can shift that demand, it means we don't actually have to build as much infrastructure. We can just optimize the systems we have and optimize our existing networks.