ET66 Calculator

The ET66 is a pocket calculator designed by Rams and Dietrich Lubs for Braun in 1987. Its form is a flat rectangle with a recessed display and raised buttons arranged in a grid, color-coded by function: grey for numbers, orange for operations, dark grey for memory. The simplicity is deceptive. Every dimension was evaluated against the ergonomic requirements of the hand, every button sized for the fingertip, every color chosen to make the calculator's functions immediately distinguishable in use. The ET66 became, for Edo Segal, the founding object of his reflection on AI — the artifact that sits on his desk reminding him, daily, that someone decided what this object would not do, and that the decision to leave things out is the skill he needs most and practices least.