She challenged the team to redesign the interface using the KISS principle:
At first, Leo was horrified. He felt like they were moving backward. But when they ran a focus group, something amazing happened. Users who had struggled with the "Smart" version for twenty minutes were now making perfect toast in five seconds. They laughed, they chatted, and they actually enjoyed using the device because they didn't have to think about it. kiss electronics
"Keep It Simple, Stupid," she said, tapping the board. "Leo, people don't want a computer that toasts. They want toast." She challenged the team to redesign the interface
Leo eventually realized that in electronics, He kept a small "KISS" sticky note on his monitor from then on, a reminder that the best technology is the kind that gets out of the way. Users who had struggled with the "Smart" version