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In 2001, IBM Research had a "smart watch" based on Linux. So Apple MUST be ripping off IBM. They OBVIOUSLY had the idea 12 years before Apple! Or maybe they're ripping of Dick Tracy? In any case, Apple did something that most companies fail to do and that is to move toward simplicity. The tendency most people have is to overthink use cases and stick all sorts of crap on the screen. So I look at it as very much a zig to the conventional zag that other companies are copying to a degree.
And Nokia/Motorola ripped off Star Trek with their flip phones.... :-)