Jim Engle-Warnick MacGill University   Leacock Building Room 531 Leacock Building Room 531 Montreal, QC H3A 2T7 Canada   jim.engle-warnick@mcgill.ca   http://people.mcgill.ca/james.warnick/           JEL Areas: C9 : Design of Experiments: General Q : Agricultural and Natural Resource Economics