Here is the tech I’ve been waiting for all my life: A way of knowing your connection to the people around you. If you were to walk into a bar, or a professional convention, you would be able to determine that the guy across the room was your college roommate’s uncle. That woman used to date your brother’s colleague. Another person was in your cabin at camp when you were in junior high. We are all connected somehow but we don’t know it — six degrees of separation, seven degrees of Kevin Bacon and all that, you know.