Boundaries and (Constructive) Interaction Susan Oyama In: Genes in Development. Re-reading the Molecular Paradigm (2006, pp. 272-289). Eva M. Neumann-Held & Christoph Rehmann-Sutter, Editors Durham, North Carolina: Duke University Press A. Introduction B. Interactions and Construction C. Organisms and Outlines: Containing Causation D. Insides, Outsides, and Individualism 1. Choosing Units of Analysis 2. Delineating Entities 3. Delineating Causal Complexes E. Boundary Work: Cellular Programs and Hybrid Disciplines 1. Cellular Developmental Programs? 2. Eco-devo, Evo-devo F. Conclusion "We have to look inside ourselves as well as out. . . . we cheat . . . and diminish ourselves by suggesting that we are made only of reactions to the world around us, as if we bring no inner self into our lives." These words come from Deborah Blum's (1997: 261) popular treatment of biological sex differences in humans. I begin with her admonition to remember our biological interiors neither to embrace it as scientifically ratified wisdom nor to hold it up as an