John Gruber discusses PastryKit, Apple’s fancy webkit library for making surprisingly native-looking apps in the MobileSafari browser. I’m uneasy:

Everything related to scrolling is implemented within the app itself, in JavaScript.

Ugh… Is that sort of thing really what we want to encourage in app development? For particularly well-thought out examples, like picasa’s, it makes some sense. But for a mobile device, with limited resources, handling low-level UI events in Javascipt? Come on…

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