Comment by TuringNYC

>> I mean if you couldn't stand using the device long enough to test it (not that you should have to - i agree on that), maybe the problem was that the device simply wasn't in anyone kind of ready state to be shipped as a revolutionary new way of interfacing with computers. Like christ, it would overheat after 25 minutes?

Well the usage for these types of devices (e.g., Apple Watch, Google Glass) is meant to be notifications driven and event driven. So the unit was sufficient for regular Production usage (though not great for all-day use.) However, development is basically a constant stream of tests, etc -- so the development experience is continuous and thus much more taxing than the Production user experience.