On September 4, 1882, Thomas Edison threw the switch at the Pearl Street Station in lower Manhattan, illuminating just a few dozen customers with a steady, direct current hum. While gas lamps had held dominion over the night for decades, this moment was not merely about artificial light; it was the genesis of the centralized power grid. Edison demonstrated that electricity could be generated at scale, distributed safely beneath city streets, and metered as a utility. For our modern digital ecosystem—where planetary server farms and microprocessors demand an uninterrupted diet of electrons—Pearl Street serves as the architectural root directory. Before we could weave the invisible threads of the internet or compute at gigahertz speeds, humanity first had to industrialize lightning. Edison’s flick of a switch booted up the 24/7 electrified world.