"Lex mentions at <a href=""https://www.youtube.com/watch?v=98HZanvAJ8Y&amp;t=5m29s"">5:29</a> about coming up with a metric to measure complexity. There is one: Energy Rate Density", developed by Dr. Eric Chaisson, an Astrophysicist and the Director of the Harvard Observatory, and developer of the Cosmic Evolution theory. It measures complexity across all scales. Lex should have him on-- he's fascinating and could illuminate complexity from a cosmic scale.