What We Built Together, And Have Stopped Maintaining.

There is a category of thing that no individual can buy alone — not because it is too expensive, but because it does not exist as a private good. Clean air. Public health. A scientific establishment. A functioning safety net. The deep infrastructure on which markets and freedoms depend, but which markets and freedoms cannot themselves produce. Economists call them public goods. Earlier centuries called them the commons. They are what a republic builds in common because no other unit of civilization can.

The United States built more public goods, faster, than any society in history — interstate highways, rural electrification, the National Institutes of Health, the GI Bill, the moon landing. It has spent the last forty years allowing them to depreciate. The commons here is what is left, what should be replaced, and what is now possible to build that was not possible before: a continental-scale electric grid, a federal repository making all taxpayer-funded research freely accessible within twenty-four hours of publication, a safety net that keeps people from falling through.

The pillar covers the long horizons. Health security and crisis response, the environment we share, the science and infrastructure that take decades to mature, the safety net that catches the people markets do not, and — in a category of its own — humanity’s first credible move beyond the planet. Five topics, thirty-four proposals. Slower returns than the rest of the Compact, larger in cumulative effect than any of them.