 In early philosophical literature, a ‘prediction’ was considered to be an empirical consequence of a theory that had not yet been verified at the time the theory was constructed—an ‘accommodation’ was one that had. The view that predictions are superior to accommodations in the assessment of scientific theories is known as ‘predictivism’. Commonly, however, predictivism is understood more precisely as entailing that evidence confirms theory more strongly when predicted than when accommodated. Much ink has been spilled modifying the concept of ‘prediction’ and explaining why predictivism is or is not true, and whether the history of science and, more recently, logic (Martin and Hjortland 2021) reveals that scientists are predictivist in their assessment of theories. The debate over predictivism also figures importantly in the debate about scientific realism. 