I'm very pleased to see Bruce Schneier looking at other disciplines to help build more secure systems. Disciplines such as evolutionary anthropology, specifically social evolution, can give us a major insight into why we behave the way we do and as such can help with the design of any technology not just technologies applied to securing systems and data. More interdisciplinary approaches to the design and development of technology will help us to achive more usable and more effective systems.
Another article which argues for this type of multidisciplinary approach with particular reference to digital identity can be found here:
http://www.irriis.org/ecn/ECN%20issue%209%20v1.pdf the article is called Requirements for a Practical Digital Identity System

Creation story as told in the Bible-Genesis is the truth and key to understanding human behaviour. The evolution story is dead !. period. What a waste of time anlyzing human behaviour from monkey evolution perspective