Degrees of Freedom

Preface

There is a way of looking at economies that most financiers never encounter. It comes from physics, and it changes everything.

In thermodynamics, a system's capacity to do useful work is determined by its free energy — the difference between total energy and the energy locked up in entropy. An economy works the same way. Capital is energy. Financial infrastructure — the markets, the property rights, the instruments, the regulatory frameworks — are the channels through which that energy flows and converts into work. And the measure of an intelligent system, as the physicist Alex Wissner-Gross has argued, is its ability to maximize future freedom of action: to keep the most possible futures accessible.

By this measure, the space economy represents the largest reservoir of untapped free energy in the global financial system. The potential is thermodynamically obvious — a 97% reduction in launch costs has lowered the activation energy for an entirely new domain of economic activity. And yet the financial world has not built the channels to let capital flow there. The result is a system far from equilibrium: enormous potential energy with no pathway to conversion. The global space economy was worth roughly $570 billion in 2024. By 2035, credible projections exceed $1.8 trillion. By 2045, some models suggest $4-10 trillion. The gradient is steep. The channels are missing.

This series makes the case that we need to think about the space economy the way a physicist thinks about a thermodynamic system. Capital wants to flow toward higher-entropy states — toward configurations that maximize future optionality. Space is the ultimate high-entropy frontier: it multiplies the accessible states available to civilization by orders of magnitude. But without the financial infrastructure — the asset classes, the property rights, the insurance products, the securitization structures — the system cannot reach equilibrium. The energy stays trapped.

Think of this as a briefing on the thermodynamics of the space economy — written not for engineers, but for the capital allocators, policymakers, and financial architects who will determine whether humanity's expansion beyond Earth is funded, sustained, and governed well. The physics says the transition is inevitable. The question is whether we build the channels, or whether the energy dissipates.

How to Read This

The series is structured as eight chapters, each building on the last. The argument follows a thermodynamic arc: we begin with the energy gradient (the opportunity), move through the phase transitions (falling costs, new infrastructure), examine the ordering principles (property rights, governance), and arrive at the instruments and policies needed to channel the flow. You can read them in order or jump to individual chapters. Use the table of contents on the left (or the menu on mobile) to navigate.

Arrow keys (← →) navigate between chapters. Hover over footnote numbers to see them inline.