Allan Franklin is professor in the Department of Physics at University of Colorado. He is the author of numerous books, including "Are There Really Neutrinos? An Evidential History; Selectivity and Discord: Two Problems of Experiment;" and "No Easy Answers: Science and the Pursuit of Knowledge. " A. W. F. Edwards was R. A. Fisher's last student. He is professor of biometry (emeritus) at Cambridge University. His work includes "Likelihood; Foundations of Mathematical Genetics; Pascal's Arithmetical Triangle: The Story of a Mathematical Idea"; and "Cogwheels of the Mind: The Story of Ven...