Comment by riffonio

Yeah, I literally said in my comment that I'm aware it doesn't make much sense :) I agree with you! I just saw it on the Duo and fancied seeing it on my Mac. But if you try it, or watch the animation closely, you'll see I made some changes to the effect. For the Mac, my idea was that the lid is just a kind of window into a fourth-dimensional space where the actual screen lives. When you open the lid, you're moving it closer to this "ethereal" screen until the two attach.