 Enough about what temporal parts are supposed to be. Why believe in them at all? It’s not clear whether ordinary thinking involves any commitment for or against temporal parts: some believe that it is neutral, while others believe that the default assumption is that things don’t have temporal parts. Regardless of what ordinary thinking tells us, advocates of temporal parts argue that their view offers the best solutions to a number of metaphysical problems. Endurance theorists respond by offering solutions of their own, criticising the temporal-parts solutions, or both.