 Questions such as these are notoriously difficult to answer. Those who prefer a rational view of scientific change must demonstrate that their preferred epistemic norms actually inform the choices made by scientists. This has proven to be difficult. If we re-consider our case from Section 3, the oxidative phosphorylation controversy, there exists a sociological account (Gilbert and Mulkay 1984) as well as different philosophical accounts that do not even agree in how to explain scientific change (Allchin 1992, 1994, 1996; Weber 2005, Ch. 4–5).