Nice writeup. I'm glad we have moved beyond skeumorphism, because a skeumorphic peek and pop would have been disastrous (like the 'curl up' transition of yester

Nice writeup. I'm glad we have moved beyond skeumorphism, because a skeumorphic peek and pop would have been disastrous (like the 'curl up' transition of yesteryear, seen in apps like maps). The current interaction, motion and visual models are clean and fast.