This essay focuses on conceptual engineers who aim to improve other people's patterns of inference and attention by shaping their concepts. Such conceptual engineers sometimes engage in a form of epistemic paternalism that I call paternalistic cognitive engineering: instead of explicitly persuading, informing and educating others, the engineers non-consultatively rely on assumptions about the target agents’ cognitive systems to improve their belief forming. The target agents could reasonably regard such benevolent exercises of control as violating their sovereignty over their own belief formation. This is a pro tanto reason against such engineering. In addition to the relevant projects of conceptual engineering, paternalistic cognitive engineering plausibly includes certain kinds of nudging and evidence suppression. I distinguish the sovereignty-based concern from other ethical worries about conceptual engineering and discuss how one might justify the relevant conceptual engineering projects despite the sovereignty-based reason against them.

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Hirsch's collection of previously published essays (from between and , with the exception of one from ) provides comprehensive insight into his recent defence of common sense against revisionary physical object ontology.

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Does conceptual engineering as a philosophical method deserve all the attention that it has been getting recently? The important philosophical questions, one might say, are about the world, not about what our concepts are or should be like. This paper fleshes out one way in which conceptual engineering can contribute to philosophical progress. The suspicion that conceptual engineering is getting too much attention presupposes that it is important to distribute our philosophical attention well (for example, conceptual engineering should not get more than its fair share). The paper’s defense of conceptual engineering builds on that assumption. Conceptual engineering, it argues, is a way of configuring philosophers’ patterns of attention for the better: it serves attentional progress in philosophy.