Your economic life expectancy is shrinking. This is not a recession. It is a phase transition. Emad Mostaque, founder of Stability AI and Intelligent Internet, calls this the Intelligence Inversion: a new age where artificial intelligence turns human intellect into an abundant commodity. That single shift is cracking the old engines of work, money, and meaning that were built on scarcity. Our dashboards show record profits, while daily life shows a loss of purpose. The gap signals a paradigm collapse. Mostaque argues we have a finite window, the Thousand-Day Window, to choose among three futures: a comfortable cage of Digital Feudalism, a paranoid fortress of the Great Fragmentation, or a living partnership of Human Symbiosis. The Last Economy is not another warning. It is a build plan for the third future. Drawing from physics, complexity science, and computer science, Mostaque offers a blueprint for systems that treat abundance as a feature and defend human agency at scale. In this world, human worth is no longer tied to economic utility. Value flows from creativity, judgment, and care. The work ahead is a civilization-scale software update that turns this blueprint into code, policy, and culture.