 More recently, problems of the empirical equivalence between theories and the underdetermination of theory choice were addressed by Pablo Acuña, particularly in the case of Lorentz’s ether theory and Einstein’s special relativity (Acuña and Dieks 2014, Acuña 2014a). Acuña (2014b) also analyses three artificial cases of empirical equivalence, arguing that they are not the result of practice of real science but cooked up by philosophers of science.