Jim Holt, author of the fascinating Why Does the World Exist?: An Existential Detective Story, was a recent guest on NPR's Radiolab. The subject of the short episode is nothing less than the very nature of existence, which is not bad for a podcast that runs less than fifteen minutes. The discussion centers on how solid reality is at its most basic level or whether it is actually comprised of fields or rules. Essentially, it is asking the question, is reality made of stuff or is it made of idea? This, of course, is a subject of great interest to me, as Those That Wake will attest.
You can hear the entire episode here.