Lior Alexander posted that twenty-first century civilization runs on twentieth century physics. He introduced Physical Superintelligence as an effort to restart the rapid progress seen when a small number of researchers produced lasers, transistors, and nuclear energy over twenty years. The post notes that discovery later became institutionalized. Alexander founded AlphaSignal, an AI news platform, and shares research and tools on the account. The statement positions PSI as a way to apply AI toward new foundational advances in physics.