True. I think we probably a decade away from that sort of processing power being easily accessible. But think what you could do now, or the very near future, with something like this in a set environment.
Consider the use for training a new employee at a restaurant how to make anything. Assuming all the restaurants in a chain are all set up the same, so that all the ingredients are in the same place in a station, then it could use visual cues to show them in real time how to put together anything the restaurant makes.
Adding new menu items would be a snap. No training needed. The glasses pulls up the next item to be made from the cue and shows them what to do. No thinking required by the human, just following along with what the glasses show him.
Every job could be minimum wage!