So to write good software you have to understand how little users understand. They’re going to walk up to the software with no preparation, and it had better do what they guess it will, because they’re not going to read the manual. The best system I’ve ever seen in this respect was the original Macintosh, in 1984. It did what software almost never does: it just worked.7
They're going to the software with no preparation, and it had better do what they guess it will
