[mozey]

Contact lenses are a pita. I suspect it's going to be a smartphone-like form factor combined with a voice UI similar to the movie Her from 2013. Eventually the visuals on the phone screen will be replaced with a neural link. It would make sense if the implant is just a dumb antenna, combined with a removable "earbud" that connects it to the computing device.

[AstralStorm]

We have not conceived useful applications that actually require AR yet. It has to be something requiring immediate feedback - maybe driving a car or piloting a similar vehicle would be such application. Maybe stock market. Or something entirely unforseen, like data analysis or warehousing - using human intelligence better?

Voice is much too slow, as is listening - might as well use the current devices at those speeds.

Computers started with bookkeeping and mass production control. It took quite some time for them to penetrate office market or to (partially) replace the previously used communication tools.