The light does not know your name. It does not know your floor. But thanks to the logi escalier , it knows exactly when you need it—and, more importantly, when to say goodnight.
What was needed was a logic —a set of rules for the electricity to follow. This was the birth of the . The Core Principle: Temporary Presence The logic is simple, elegant, and almost human: When a person requests light, provide it, but do not waste it. Assume they only need enough time to climb one flight of stairs. logi escalier
In the early days of electricity, controlling a light was a simple, private affair. You flipped a switch on the wall, the filament glowed, and the room filled with light. But as buildings grew taller and hallways stretched longer, a problem emerged: the staircase . The light does not know your name
At that exact moment, Mr. Moreau is on the 4th floor, carrying a heavy box. The stairwell goes pitch black. He stumbles. He curses. The logic failed him because it didn't know someone new needed the light. What was needed was a logic —a set