Raven Resonance CEO @tomthecarrot explains the 3 beachhead use cases that will allow AR devices to actually scale: "The first is micro interactions. This is something where you're in and out of the display within 5 to 10 seconds. Examples are next navigation direction, phone notifications, changing music, or cooking instructions." "Second is reference material. This is where you can AirPlay your phone screen or pin up relevant information. If you're working on something with your hands, you…