 By building the purposes of model users directly into an answer to the ER-problem, Similarity 3 is explicitly not a naturalistic account (in contrast to Similarity 1). The shift to users performing representational actions invites the question of it means for a scientist to perform such an action. Boesch (2019) offers an answer which draws on Anscombe’s (2000) account of intentional action: something is a “scientific, representational action” (Boesch 2019: 312) when a description of a scientist’s interaction with a model stands as an earlier description towards the final description which is some scientific aim such as explanation, predication, or theorizing.