 In fact, there is no such thing as simplicity per se. Instead, what we have are different types of simplicity depending on how and what we focus on “simplifying”. Irina Mikhalevich (2017) has argued that simplification can be done through homogenization, by aiming at fewer entity types; through reduction, by decreasing the number of entities; or through idealization, by removing entities that are not seen as crucial. Simon Fitzpatrick (2009) distinguishes five different notions of the ideal of simplicity that are used in the literature on comparative cognition: