Some interaction design you can print. The best of it you have to feel: an object in your hand, time passing, a system answering back. Try each one.
Durrell Bishop, 1992. Each voice message becomes a marble. Count them at a glance, drop one in the dish to play it, set it on the phone to call back. The object itself is the interface: no screen, no menu.
The ticks change as the message travels: sent, delivered, read. Then the other person starts typing. None of it is a still picture.
A good control reacts the instant you touch it. The heart fills, pops, and the count moves, so you never wonder if it worked.
Instead of a frozen screen, you watch it happen. Progress tells you it is working and roughly how long is left.
Flip it and it slides, the colour changes, the label updates. The control always tells you exactly where it stands.