Suggested Reading: It’s a good idea to start with Lewis (1986a, pp. 203–4), who coins the phrase ‘problem of temporary intrinsics’, argues that none of the endurance theories of change are satisfactory, and sets out the perdurance account of change. Wasserman (2006) surveys the debate; see also Wasserman (2010). McTaggart (1927, sections 315–6), Simons (1987), Mellor (1998, section 8.4), McCall and Lowe (2009), and Oderberg (2004) argue that variation between temporal parts is not genuine change