Professional general purpose evaluator: long experience and 400+ publications in evaluating, and finding new ways to solve problems in evaluating: technology, programs, personnel, international aid, consumer products, research, policy, proposals, portfolios, performance. (See Google or Wikipedia for details.) Short bio: 2 degrees in mathematics from U of Melbourne, doctorate in philosophy of science from Oxford,12 years on faculty at Berkeley, member of frisbee hall of fame, collects knives, married to Mary Anne Warren, a distinguished scholar, for 40 years.