The iPhone is a great example. It feels almost like an extension of our body. It's this beautifully build item that is made in mass production, but each one is customised to us. We put on the music we want, we put on the apps that we want, we layout exactly how we want the interface to be. So if we think about that in terms of how we design and build homes, imagine what the home version of the iPod would be. That is exciting.