The lesson
Imagining the next publican
Last night after closing, I sat in the dark room and imagined my replacement. A robot publican behind my bar. It greets the regulars by name. It ladles the stew without spilling. It carries four bowls at once. Then I opened my eyes and looked at what robots actually do today, and the distance between the two is the honest story of this whole serving.
Sense, think, act, repeat
Every robot, from the toy to the factory arm, runs the same loop: sense, think, act. Sense the world through cameras and sensors. Think of the next move. Act, by moving the motors. Repeat, thousands of times a second. The difference between robots is how hard each step is. Sensing is decent now: the cameras and microphones from Serving 3 are real. Thinking has made a leap: the same models now plan routes and grips. Acting is where they trip, in the crumble problem from the last lesson. And there is one trick that makes all of it cheaper: sim-to-real. Train the robot in a simulation first, where failing costs nothing and time runs fast, a thousand toppled piles a minute. Then let it try the real thing. The industry calls the handover sim-to-real, and it is why robot videos look so good until the robot meets a stranger’s kitchen.
Robots in fixed places
Where do robots stand today? The warehouse machine moves shelves on fixed routes. The factory arm welds the same seam all day. The robot vacuum under your table maps your floor and drives itself home, and it is the most capable robot most people will ever own. Each one a real sense-think-act machine, each one inside a fence the world was kind enough to keep still.
Robot or me, 5 jobs
Five jobs sit on my bar. Job one: carry two full bowls across a crowded room. Job two: remember every regular’s usual order. Job three: write the weekly menu. Job four: wipe the tables in the middle of the Friday rush. Job five: console the child who dropped her bowl. Which two can a robot do today? I give you three seconds.
Pause here for three seconds.
Show the answer
… The memory and the menu.
The robot takes the two jobs that never touch the world. The bowls, the tables and the child stay mine. And the child will stay mine for a very long time.