Published online by Cambridge University Press: 01 January 2022
This article examines the adequacy of causal graph theory as a tool for modeling biological phenomena. I argue that the causal graph approach reaches its limits when it comes to modeling biological phenomena that involve complex spatial and chemical-structural relations. Using a case study from molecular biology, I show why causal graph models fail to adequately represent and explain biological phenomena of this kind. The inadequacy of these models is due to their failure to include relevant spatial-structural information in a way that does not render the models nonexplanatory, unmanageable, or inconsistent with basic assumptions of causal graph theory.
This paper arose from a collaboration with Marcel Weber during my time at the University of Geneva, and it profited much from our stimulating discussions. I also thank Benjamin Jantzen, Christopher Hitchcock, Lorenzo Casini, Alexander Gebharter, Maximilian Huber, and the members of my DFG Research Group “Causation and Explanation” for their helpful comments on earlier versions of the paper. This material is based on work supported by the German Research Foundation (DFG; FOR 1063).