https://www.mitre.org/news-insights/impact-story/rapid-proto...

> In another prototype—again, heavy on the use of what he called "materials that move at the speed of thought," such as coat hangers, tape, fishing line, projectors, chopsticks, and a presentation clicker—they learned that the Minority Report style of interfacing with a computer by swiping with your hands at images was actually a poor idea. While people loved trying out the prototype, even the strongest found that their arms and shoulders soon began to hurt.