As people move around through real physical worlds, talk, join groups, and spend time together, and then move, split up, and join other groups, and spend time together, they’re building a data set of how much time they spend together.
As people move around through real physical worlds, talk, join groups, and spend time together, and then move, split up, and join other groups, and spend time together, they’re building a data set of how much time they spend together.