It’s absolutely unbelievable, how little it takes to make a good design. Actually, it’s unbelievable, how much it takes to make so little.
The Mighty Mouse is such a thing. While I haven’t seen it yet, or actually laid hands on it, it seems to me, reading the descriptions, that the designers have put a lot of thought into this. Items like the left/right finger detector. The built in speaker for audible feedback. ...