Google Glass is an extraordinary device. Like the Apple II, the Palm Pilot, and the first iPhone, Glass is a category-defining product that will quickly become the template for all other devices of its type going forward. It's the kind of device that will have a place in a computer history museum.

As a technology journalist, I often cover innovative devices, or exciting devices, or devices destined to sell millions, but how often, going in, can you say "This is a device of historical significance?"