This thread started here. When you're done reading please come back and weigh in.

I've been spending significant time using my iPod touch, and as some alluded to in the previous thread, the foremost reason for Apple's iPhone OS animation is to optimize the human interface. By doing this the claim is that productivity, experience and usability are improved. I agree: things are happening with my cadence, and thus I have an easier time interacting, my eyes spend less time waiting and more time focused, and the smooth transitions might keep me from wasting expensive starting and stopping energy. And when there's a multi-core Cortex A9 is in these things, I'm guessing Apple will try and reinvent multi-tasking.