"I live in a community. It's about 170 homes, and we're all neighbors. We have a shared mailing list. And so I'm a big fan of this small experiment. You know if I need a 30-foot ladder to inspect my roof. I'm not going to go buy it to use it once. We have this circular economy and sharing. If I make too much food, I just post it and ask my neighbors, Hey, is anybody interested in this? So I think that on a small scale, I see it happening much more.

I'm lucky I work in a community where I've known my neighbors for a long time, but I can see why it would be more difficult in big cities or in places where people do not communicate. So how do you create these communities? Because once the community exists, it's just like a tool. Once you have the community, these behaviors actually happen naturally. And if you look at how human beings evolve as ...