John Gruber On The Idea of iPad Apps Running on Mac OS X

I can prove it, practically, that iPad apps aren’t going to run on the Mac as a standard feature. iOS apps do run on Mac OS X, today, in the iPhone/iPad emulator that ships with the iOS developer kit. Ends up they’re just not that pleasant to use on a Mac. Gestures that are natural and fun with direct touch are awkward and clumsy using a mouse or touchpad.

And we thought this idea of iOS apps running as “widgets” on the desktop had been buried in the darkest corners of the blogosphere. Turns out some people are still claiming it’d be a “great addition to OS X”. Too bad Apple is not Adobe, and they don’t care about “cross-platform interoperability” as much as they care about “single-platform excellence”.