Joseph Cohen gets it:
They reversed the direction of mouse scrolling! Crazy! But really, they needed to. With Lion, Apple is trying to change the user experience metaphor that has governed OS design since the 80s. It was a symbolic move, but one, to me, that ties together the new interaction paradigm — you interact with the content, not the OS.
Lion — at $29 — seems like an incremental upgrade. But I guarantee that it will prove to be one of Apple’s boldest moves in defining how we interact with computers of the future.
(Via Cameron Moll)