I suspect two reasons for that. Firstly, Google is on a social binge. They push G+ with everything they have and that demo was probably partly designed to cont

I suspect two reasons for that. Firstly, Google is on a social binge. They push G+ with everything they have and that demo was probably partly designed to contribute to the subliminal image of G+ being "the future". Also noteworthy in that regard the casual placement of competing products (apple) in an "also-ran" fashion. Secondly, Google is probably fully aware that they don't need to promote the glasses to industry and military. These sectors will adopt the technology without a blink anyway and are probably already in touch. There's little need to address them in a public keynote, those battles are fought in dim conference rooms. Instead Google seems to be using their earliest opportunity here to gauge and tease the inevitable yet still completely unknown consumer potential - basically exercising their first-mover advantage. Then again, if you were to draw conclusions from their terrible choreography and execution of the keynote (you know, the 2 hours before and after the parachute jump), it might just as well all be completely random and I'm merely reading way too much into it...