Play is this process of operating the world, of manipulating things. It's related to experimentation, and it's related to pleasure, but not defined by it.

Today, all our wives and husbands have Blackberries or iPhones or Android devices or whatever-the progeny of those original 950 and 957 models that put data in our pockets. Now we all check their email (or Twitter, or Facebook, or Instagram, or) compulsively at the dinner table, or the traffic light. Now we all stow our devices on the nightstand before bed, and check them first thing in the morning. We all do. It's not abnormal, and it's not just for business. It's just what people do. Like smoking in 1965, it's just life.

Even when we tell kids to go play, what do the kids do? They come up with a set of constraints and structures. "Oh, we're gonna build a fort out of clothes, and now that we're in the fort we're going to pretend that we're prisoners," or whatever.

Our ideas of happiness, gratification, contentment, satisfaction, all demand that those feelings come from within us. If you flip that on its head and say "What if I took the world at face value?" and then ask "What can I do with what is given?" it's an interesting trick to turn around the whole problem of how you feel.

We're stuck in these situations with other people and our stuff and our jobs, and thinking that we can extract ourselves from those seems doomed to me. Instead, how can we live within those systems of constraints? We don't have to enjoy them, exactly, but at least acknowledge that those boundaries are real and that they structure our response to the world. And then once you do that, you allow yourself to say "I did my best given the circumstances."

We're used to thinking of fun as a sort of synonym for light pleasure.

When we think about play and games and the situations in which having fun is seen as an outcome, they often have to do with repetition. You're returning to something again, and even despite that similarity, you squeeze something new out of it.