 Proponents of the trickery view disagree over several details, most notably how to define a faulty mental state. Some proponents of the trickery view argue that manipulation occurs when the influencer attempts to induce what the influencer regards as a faulty mental state into the target’s deliberations (Mills 1995; Noggle 1996; this idea is built into Dowding’s account). Others argue that we should define manipulation in terms of the attempt to introduce an objectively faulty mental state into the target’s deliberations (Hanna 2015: 634; see also Sunstein 2016: 89). Anne Barnhill suggests that our usage of the term “manipulation” is inconsistent on the question of whose standards determine whether the influencer attempts to induce the target to adopt a faulty mental state (Barnhill 2014).