Everybody Plays: Take a look around, and think about what you see around you. There’s a chair, that you’re presumably sitting on. You know how it feels, and how reacts - how it supports your weight. It works exactly as you’d imagine. There might be a cat, a PC monitor. Look through the window, at the world outside. If you threw a ball out of it, you know, pretty much, how it’d fly – in a downwards curve, governed by gravity and velocity. Everything you see, is governed by rules, and if you’ve been alive for more than a few seconds, you’ve got a pretty good idea of how everything interacts with each other, and the way the world works.