The desktop computing revolution was largely a cost-driven fan-out of existing computing paradigms on a cheaper/smaller scale. Glass is not cheaper than mobile phones ... hence my suggestion that it's only really the display that's different from a functional perspective. The danger of omnipresent wearable video recorders vs. privacy are quite a lot more weighty than the as yet unproven use cases for such a display. Society should encourage a public discussion on the value of privacy and proceed in this direction only with extreme caution. Profit-driven alliances with totalitarian governments are a modern historical fact: https://thepiratebay.sx/torrent/8660186