When I was in high school in the 1990s, my physics teacher pulled me aside with a question he couldn’t shake: “How do they get every computer in the world to talk to every other computer?”  He’d seen how hard it was to agree on basics like electrical outlets or phone dialing standards. Yet suddenly we had this internet thing where a machine in Thunder Bay could talk to one in Tokyo in milliseconds. No central planner. No global treaty. Somehow it just worked.&nbs...