 Even though Similarity 3 resolves a number of issues that beset simpler versions, it does not seem to be a successful similarity-based solution to the ER-Problem. A closer look at Similarity 3 reveals that the role of similarity has shifted. As far as offering a solution to the ER-Problem is concerned, all the heavy lifting in Similarity 3 is done by the appeal to agents and their intentions. Giere implicitly concedes this when he observes that similarity is “the most important way, but probably not the only way” for models to function representationally (2004: 747). But if similarity is not the only way in which a model can be used as a representation, then similarity has become otiose in a reply to the ER-problem. In fact, being similar in the relevant respects to the relevant degree now plays the role either of a representational style or of a normative criterion for accurate representation, rather than constituting representation per se. We assess in the next section whether similarity offers cogent replies to the issues of style and accuracy, and we raise a further problem for any account of scientific representation that relies on the idea that models, specifically non-concrete models, are similar to their targets.