 Think of the lump of clay and the statue. Suppose you formed the lump out of smaller bits on Monday, made it into a statue on Wednesday, then smashed the thing to pieces on Sunday. According to perdurantists, the lump of clay is a week-long four-dimensional object, and the statue is a five-day-long four-dimensional object. Indeed, the statue is a temporal part of the lump of clay, composed of some of the instantaneous temporal parts which compose the lump. Now, how many statue-shaped things are on the plinth on Thursday? Well, the lump of clay and the statue both have a temporal part sitting on the plinth on Thursday, so they’re both partially on the plinth on Thursday. But neither the lump nor the statue is wholly there on the plinth on Thursday. This explains both our intuition that there’s only one object there (there’s just the one arty-looking temporal part at any given moment) and our intuition that the statue and the lump are different objects with different properties (they occupy different four-dimensional regions).