A Garmin Eat Watch
The watch tells you to stop eating. No willpower required. Just a signal, like a fuel gauge.
John Walker called it the Eat Watch. The AutoCAD founder wrote The Hacker's Diet in 1991. An engineer's approach to the body: treat it as a system. We are bags of water. Calories go in, calories go out. Weight is the integral of the difference. Why not fat?
Walker proposed a thought experiment. You set a calorie budget for the day. The watch counts down as you eat. When you hit zero, it tells you to stop.
He never built it. This was 1991. He ran the numbers on paper, then spreadsheets.
So I built it. I'd never touched Garmin development or heard of MonkeyC before. I opened Claude, started the spec, and three hours later I had an app on my wrist.
The app: a daily calorie budget, a reset hour. The watch stores both. One word at the top: EAT in green. One number below: calories remaining. When the number hits zero, the text changes to STOP in red. At your reset hour, it starts fresh.
I look at my wrist. Green. I can eat.
It's simple. Tap to add or subtract calories. The watch isn't connected to anything. It only knows what I tell it.
MyFitnessPal has the real numbers. Every meal logged, every snack timestamped. If I can sync that data to my wrist, the Eat Watch becomes what Walker imagined: a closed loop.
That's the next build.
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