Robert E. Kohler is Professor of History and Sociology of Science at the University of Pennsylvania. The recipient of an award for lifetime achievement in his field, he is the auth...view moreRobert E. Kohler is Professor of History and Sociology of Science at the University of Pennsylvania. The recipient of an award for lifetime achievement in his field, he is the author of four previous books on the experimental and field sciences, including Lords of the Fly: Drosophila Genetics and the Experimental Life.view less