 From a typical perdurantist perspective, apparent indeterminacy in persistence arises from our fumbling failures to deal with the multitude of precise four-dimensional objects around us. This account of indeterminacy is not a consequence of perdurance theory alone: as well as the claim that ordinary things have temporal parts, it involves the claim that there are many more persisting things than we recognise in ordinary life. It is possible to believe in temporal parts without accepting this second claim but, as we will see in  section 8,  most perdurantists do accept the second claim. The typical perdurantist story also involves a theory of vagueness which traces it to our use of language; it is not compulsory for perdurantists to think about vagueness in this way, but many do adopt this ‘linguistic’ or ‘semantic’ approach to vagueness.