> When you learn how to drive a car, you can expect the same standard across all cars. Across all cars. Not "across all controllable artifacts" or even "across

> When you learn how to drive a car, you can expect the same standard across all cars. Across all cars. Not "across all controllable artifacts" or even "across all vehicles" (driving a bulldozer is way different from driving a car). An optimal user interface for (e.g.) an accounting package is extremely unlikely to be the same as the interface for (e.g.) a video editor. For that matter, imagine attempting to drive a car by picking the things you want to do off a menu with a mouse. It would suck. Big time. "Ok, now open the Speed menu and scroll down to 'brake'. Now go to the 'slam' submenu item... whoops! Sorry, kitty!".