Designing Honesty: Showing What You Can't Do
■ When a Spec Limit Becomes Honesty Payload 500g. That's the number written in TSUKAMU-kun's spec sheet. The coffee cup weighs 501g. TSUKAMU-kun stops quietly at that 1g wall. No rattling, no resistance — just an arm lowering in silence. This "not moving" response is the direct embodiment of the design principle: Honest.
■ Two Robots Cheering Each Other On, Unaware of the 1g Gap GOMEN MOTENAKATTA. KITTO TSUGI WA DEKIRU YO. Neither robot knows the cup is 501g and the limit is 500g. Only the reader knows. And yet, they move forward. This relationship of "facing forward without knowing" is what makes a robot feel not like a tool, but like a true partner.
■ Conclusion: Honesty Over Precision "Prioritize experience over precision" — this project's design philosophy finds its real meaning when faced with the 1g wall. Show honestly what can't be done, and immediately look for what's next. That honesty is what transforms TSUKAMU-kun from a tool into a partner.
