Step into a world where information floats through the open air — around your house, around your town, around the world — just waiting for you to reach up and grab it. Music, movies, phone calls from loved ones, the sound of your baby crying — it all travels in the charged particle space known as Spectrum. Your average consumer might interact with a dozen or more devices on a daily basis, designed specifically to both emit and pluck information to and from the air. But how much do we really understand spectrum? There are fights going on right now between regulators, media and telecommunications companies, and consumers about how spectrum is bought, sold, and used. Today’s guest argues that we need to go back to basics to effectively settle these battles. Christian Sandvig is a Berkman Center Fellow and director of the Project on Public Policy and Advanced Communication Technology at the University of Illinois Urbana-Champaign. On this week’s show David Weinberger and Sandvig elegantly deconstruct Spectrum, and give us some ideas as to how we can use this space more effectively. CC Music this week: Jeremiah Jacobs: Bounce Loops