> To my mind, the lerp thing makes the direct interactions in the demos look slow, smooth, and imprecise instead of fast, sharp, and immediately correct.
I think the examples are made this way specifically for you to notice the effect. Animations can, and should be employed sparingly and made fast. However, there are quite a few places where adding just a little touch of animation helps immensely: buttons that react to the touch, slight dampening of the scroll when you jump to an anchor link (so that the eye adjusts to the new page position), state changes etc.
Personal gripe: Older versions of iOS were quite good with that, but then they've made a ton of animations, and made them slow.
I think the examples are made this way specifically for you to notice the effect. Animations can, and should be employed sparingly and made fast. However, there are quite a few places where adding just a little touch of animation helps immensely: buttons that react to the touch, slight dampening of the scroll when you jump to an anchor link (so that the eye adjusts to the new page position), state changes etc.
Personal gripe: Older versions of iOS were quite good with that, but then they've made a ton of animations, and made them slow.