Wednesday, April 23, 2008 Neyman Seminar, Evans 1011 | 1011 Evans Hall Speaker: Mike Steel, Director, Bioinformatics Research Center, Canterbury. Title: The joys of being mean: tricks for (evolutionary) trees" I describe how one can sometimes obtain useful insights into the properties of phylogenetic models -- both old and new -- that at first seem quite complex, by exploiting standard properties of expectation.