Why is it that big companies fail when the technology changes? It happens in every industry, so what's the pattern? What are they all doing wrong?

Usually, the best ideas come from having to fix a really hard problem.

A game is a problem-solving activity, approached with a playful attitude

You don't want the office to be a completely relaxing place. You want it to be a vibrant place.

LinkedIn's got a little progress bar. It wants you to do things like sign up 10 of your friends. It does that near the end. At the beginning it's like, 'You put in your name. 20 percent progress! How about some other information?' People want to fill in that progress bar. They like to complete a task. They like to check a box.

More and more women are going online.

Who cares and who doesn't care about a project, is going to shape the project in a significant way.