Civilians also tend to have a lot more clocks handy, even absent mobile phones. I'll grant, though, that wristwatches would've stuck around, as an acceptably co

Civilians also tend to have a lot more clocks handy, even absent mobile phones. I'll grant, though, that wristwatches would've stuck around, as an acceptably convenient means of carrying around a timepiece, had not mobile phones with clock displays come along. The point, in any case, is that there's nothing intrinsically special about wearing a chronometer, or any other information display, on one's wrist, such that "smart watches" are necessarily a qualitative improvement over, for example, "smart phones".