Now, if we for some reason want to want to think of a watch as a functional device, as opposed to a status symbol, the advantages of putting linux on a watch are obvious. The code that runs watches previous to this was designed to...run a watch. Whereas linux running on a watch is a general-purpose OS adapted to run on a watch. Which means it can easily be extended to create all sorts of futuristic wrist-devices, i.e. phones, remote-controls, etc.
Remember Windows CE? That was a general-purpose OS adapted to run on a palm-size device. It got blown out of the water by Palm, not just because they were first, but because most people didn't want that extra functionality / complications. (Mind you, I got a Cassiopeia A-10 within about the first week it was sold, and have enjoyed it since, except while waiting to get it repaired.)
