If you see roving groups of people walking very slowly with their eyes glued to their cell phones this week, well, that’s not new. But the sheer number of them has increased because of a new cell phone game called Pokemon Go. It’s an augmented reality app. You hold up your phone with the game on and little Pokemon characters appear in the street view on your phone. For instance, let’s say you’re dropping your kid off at school and are playing the game. You could see a Charizard lurking in the bushes on your screen view of the schoolyard. And if you spot it on your phone, you can go over to those bushes to get close to its geolocation and capture it. The goal is to collect as many of the creatures as possible.