Disruptive technology doesn't come along often, and is often initially dismissed because it's easy to ignore something you've lived an entire life without. But every once in a while a bit of tech comes along that makes it easier to do what you're already doing.This is the Apple Watch.I wasn't always sold on the concept. Aside from issues related to appearance/style, functionality, personalization, fitness tracking, and useful interaction methods, my big concern was this: What real-world problem would an Apple watch solve? Knowing the obstacles was one thing; solving those problems was something else entirely. I was skeptical.The engineers at...