Selective Scientific Realism and Truth-Transfer in Theories of Molecular Structure
This chapter examines theoretical advances in understanding molecular structures at the turn of the 20th century which resulted from the Blomstrand-Jørgensen/Werner debate about the structure of cobalt complexes. Both models made predictions testable through precipitation experiments, which eventually led to Werner’s model replacing the Blomstrand-Jørgensen model of cobalt complexes. We argue that this example of theory change fits within a selective scientific realist framework: namely, the factors which gave rise to the predictive success of the failed model survived in the theory that replaced it. We further argue that the lessons from this historical case can illuminate how two contemporary objections to realism—P. Kyle Stanford’s Problem of Unconceived Alternatives and Timothy D. Lyons’ pessimistic modus tollens argument—fall short as arguments against realism.