We think of computers as boxes. But computation is the manipulation of information in any physical system. We are living inside a vast, complex computer that's already running: Earth's climate. Today, we explore the extreme frontier: using geoengineering not to alter climate, but to encode problems into it, conscripting the planet as a planetary-scale analogue computer. This is Geo-Computation.Follow the logic. Our silicon models are limited by energy and heat. Earth's atmosphere and oceans are a pre-existing, planetary-scale, naturally cooled computational substrate. They're already solving the 'Navier-Stokes equations' for fluid dynamics globally, powered by the sun.The theory asks: could we set initial conditions—through massive, coordinated particulate release or ocean temperature patterns—such that the climate's evolution toward equilibrium 'solves' a problem? The final, stabilized state of the system would hold the answer in its configuration, read by global sensors.This is not a proposal. It is a thought experiment that defines the limit of the World Model paradigm: when your understanding of a system is so complete you don't simulate it on a computer—you task the system itself to compute.The risks are absolute. You'd be debugging the jet stream. But philosophically, it reframes the planet not as a resource or garden, but as hardware running the native software of physics, which we might learn to program.My controversial take is this: The most advanced civilizations may not build Dyson spheres for energy. They might build Planetary Computation Engines—re-engineering worlds to function as analogue computers for problems intractable to digital networks. A pulsar's flicker might not be natural; it might be the clock cycle of a galaxy's CPU. For us, this remains a dangerous fantasy, but it points to the ultimate ambition: not just to read nature's code, but to one day write a program that nature itself will run."This has been The World Model Podcast. We don't just simulate systems—we probe the line where simulation becomes invocation. Subscribe now.