This is a completely new kind of design challenge. There’s no way that you can take the civilization we have and re‐scale it for 1–10 kilograms of copper per human per lifetime. You have to think in a completely different way if you’re going to operate inside of this framework where you take the sustainable harvest of the Earth and you divide by nine billion.
It’s this infrastructure that is unseen, because it is infra‐structure, it is under the structure. And when you start thinking about this massive web of technologies that keep you alive, the only interfaces we have on a day‐to‐day basis are tap, turn, flush. Everything else is hidden and unseen.