Cohen writes:
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.
Actually, you interact with the mouse or trackpad or whatever input device you’re using. You interact with the content on iOS and true multi-touch interfaces.