Did Darwin write the Origin backwards?

In his latest book, Elliott Sober argues that Darwin's theory is best described not as evolution by natural selection but as common ancestry plus natural selection."-John Hedley Brooke, Andreas Idreos Professor of Science and Religion and director of the Ian Ramsey Centre, University of Oxford. "In these essays, Elliott Sober offers analyses of the logical structure of evolutionary theory, natural selection, and the confrontation between naturalism and creationism."-Douglas J. Futuyma, Distinguished Professor, Department of Ecology and Evolution, Stony Brook University. Elliott Sober offers a reassessment of a number of aspects of Darwin's arguments in the Origin of Species. The book integrates historical material with contemporary evolutionary ideas.-Samir Okasha, Professor of philosophy of science, University of Bristol. --Book Jacket.