 One strategy is to distinguish between possession conditions and attribution conditions (Peacocke 1992: 27–33). This separates the conditions that determine \(S\)’s concepts from conditions for the attribution of the concept to \(S\). As a consequence, there is a potential gap between how \(S\) uses the concept, her grasp of it, and how it should be used if she were to use it in keeping with its content. To illustrate the distinction, it is common to appeal to Tyler Burge’s discussion of how social factors, under certain conditions, serve to determine content (Burge 1979; Peacocke 1992: 29; Millar 2004: 181–188). Burge gives an account of concept attribution that goes via word meaning. To be attributed the concept arcane, on this view, it suffices that \(S\) uses the expression “arcane” by and large correctly, “in keeping with its content”—if she is committed to her community practice of using the corresponding expression “arcane”. What determines her concept, thus, is not merely facts about her use and dispositions to stand corrected, but facts about the use of the term in the wider practice. It follows that speakers typically have an incomplete grasp of the concepts they think with and, as a result, tend to misuse these concepts.