3.63% of GDP on AI infra is bigger than railroads. Epic โ for Earth.
Earthโs whole economy is still < a trillionth of a K2 economy. Energy is the unit, not dollars.
So the chart is Phase 1, not the destination. Chips, robots, solar, Starship, then the Moon. If the stack stays on the ground, we spent railroad money to remain a rounding error. If it leaves the ground, 3.63% is the cheapest ticket in history to a stellar energy budget.