Here is a link to an excellent lecture on Flannery by Dr. Wood, given at the McLaurin Institute. I would recommend browsing the other lectures archived on the McLaurin site (www.mclaurin.org) as well. There are some good ones. After Dr. Wood gives his lecture, a professor from the University of Minnesota (with which the Institute is affiliated) offers a response that I think is not really worth listening to. But don't let that keep you from listening to the first 45 minutes. You ought to be able to download the mp3 file from the site by right-clicking (if you still haven't bought a Mac) or my holding ctrl while you click (if you are enlightened and liberated).