Ricado Uribe on Paradoxes on Non-Trivial Machines

The file ricardo-uribe.wav is a recording of Ricardo Uribe's presentation at the conference Understanding Complex Systems, May 2008, University of Illinois at Urbana-Champaign. Alas, the slides are not available, but visualizations of some of the discussion are here: https://web.archive.org/web/20100728081813/http://bcl.ece.illinois.edu/Uribe/English/Introduction.htm From Jaime Hutchinson