 The crucial move is to say that models are props in games of make believe. Specifically, material models are like the statue of Napoleon and theoretical models are like the text of The War of the Worlds: both prescribe, in their own way, to imagine something about a real object. A ball-and-stick model of a methane molecule prescribes us to imagine particular things about methane, and a model description describing a point mass bob bouncing on a perfectly elastic spring represents the real ball and spring system by prescribing imaginings about the real system. This provides the following answer to the ER-problem (Toon 2012: 62):