Functions in biological and artificial worlds : comparative philosophical perspectives / edited by Ulrich Krohs and Peter Kroes. Krohs, Ulrich. Kroes, Peter, Biology Philosophy. Technology Philosophy. QH331 .F897 2009 570.1 22 FUN Includes bibliographical references and index. Cambridge, Mass. : MIT Press, c2009. c2009. 2009 Text x, 302 p. : eng Vienna series in theoretical biology