Here are my notes from "Physical Computing," Tom Igoe's talk at ETCON.
Interaction: a cyclic process in which two actors alternately listen, think and
speak.Physical computing focuses on listening, listening to the human body. When you
ask people to draw a computer, they draw the screen, mouse, keyboard — the CPU
is out of sight, out of mind.If a computer saw us, it would see us as a Tralfamadorian from Vonnegut — small
hand-shaped being with an eye (and an ear). It doesn't know anything about our
physical expressions — lost on the computer.Design interaction to capture expression.