Fun doesn't have anything to do with pleasure, necessarily. I think this will be terrifically unintuitive for people.

If you stop someone who's talking about something being fun, and say "Well what do you mean?" it's almost impossible to answer.

You allow yourself to discover the things that are already there when you play.

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.

I think this dichotomy or opposition between work and play, between leisure and serious stuff, is definitely a bad way of thinking about the useful insights that play provides.

You can experience play at work, not because you're messing around or wasting time or something, but because you're looking really deeply and seriously at things and asking what is possible, what can be done with them, what new ideas might emerge?

The modern world is very wealthy, it's full of options. It's not like "This is the land I was born on and I have to make the most of it, and these are the people who are near me, and so they will become my family."