The desktop user interface is a mainstay of computing. Bread and butter, if you will. A pointer, icons, windows, menus and buttons, controlled using a keyboard and a mouse. Ingenious simplicity.

For almost half a century now, we haven't really managed to come up with something better, and that's not for lack of trying. This fact seems to annoy a lot

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When they did crossed that 100ms barrier, though, a qualitative change happened. People changed their views of a tool from something they have to cope with to something that’s fun, valuable and eventually become their second nature. Now they can’t imagine how they lived otherwise.