Traditionally a scientific theory is viewed as based on universal laws of nature that serve as axioms for logical deduction. In analyzing the logical structure of evolutionary biology, Elisabeth Lloyd argues that the semantic account is more appropriate and powerful. This book will be of interest to biologists and philosophers alike.

Elisabeth A. Lloyd is Associate Professor of Philosophy at the University of California, Berkeley. With Evelyn Fox Keller, she is the coeditor of Keywords in Evolutionary Biology (Harvard).