What I would say about that is that most of the infrastructure we are familiar with today was built many years ago. The reality is that population growth, combined with growth in gross domestic product—in other words, we produce more today than we did 50 years ago—means that in many places, infrastructure may now be nearing its limits.
Earlier, in response to a question from one of your colleagues, I spoke about the need to take a long-term view, meaning not just to think about today, but to consider that the infrastructure we need to build must continue to serve us for many years to come. It's therefore essential to approach this from a medium and long-term perspective. So there are two objectives that need to be achieved.