[tsul]

Notice also that the scrolling on the device is line-by-line rather than per-pixel. It's done to minimise screen redraws but it is exactly the opposite of what made the first iPhone so pleasant to use.

Yep—smooth scrolling was a famous obsession of Steve Jobs that was emphasized in just about every Apple product where it was feasible, the idea borrowed from one of the fated PARC demos. Little things like this go a long way in building a sense of symbiosis between user and device.