 In the wake of Oyama’s The Ontogeny of Information (1985, 2000) and other work, notably that of Daniel Lehrman (1953) and Patrick Bateson (2001), a view of biological evolution has arisen that emphasizes development (see also Griffiths &amp; Gray 1994a). In the nineteenth century, development was an extremely active research program. The next great discoveries in biology were predicted to be in the area of development; however, this was not to be. First Mendelian genetics and then a version of evolutionary theory centered on population genetics took over biology, and they did so while avoiding development. Everyone knew that development was central to both evolution and reproduction, but no one could see how to integrate the masses of developmental data available into the emerging synthesis of evolutionary biology and genetics. As a result, development was left out of the Modern Synthesis (Beurton, Falk, &amp; Rheinberger 2000; Gilbert 1991). Considering how central development actually is in metazoan and metaphyte biology, the advances made while ignoring it are staggering.