I spend my time studying questions about our most central pieces of normative vocabulary (‘ought’, ‘must’, ‘reason’) – specifically, questions about what these expressions mean, and how their meanings are related.

The common thread running through my current research is a focus on reasons and reason-talk. As I see things, semanticists and philosophers of language have been modelling normative language without attending to the most central normative notion of all: the notion of having reason to do something. My dissertation forms the groundwork for a unified theory of normative language that puts reason-talk at centre stage.

  • (Title redacted for anonymous peer review)

    According to a standard picture, normative reasons do not extend beyond the boundaries of agency. If something isn’t an agent – if it can’t do rudimentary practical reasoning, at the very least – then there can’t be normative reasons for it to do one thing rather than another.

    I reject the standard picture. In this paper, I argue that there are reasons for non-agents to behave in some ways and not others. If my kitchen is full of smoke, then there is a reason for my smoke detector to start alarming. If my detector doesn’t go off, then there is something wrong with it: it is failing to do what there is good reason for it to do.

    This has important consequences for theories of normative reasons. For one thing, we should not analyse what it is to be a reason by appealing to distinctively agential properties or capacities, like the standards of good practical reasoning. Instead, I suggest, all one needs to get reason-ascriptions going is some kind of teleology. There’s a reason for my alarm to go off in the presence of smoke because that’s what smoke alarms do when they’re functioning well.  

  • (Title redacted for anonymous peer review)

    Take a look at the following two popular and plausible principles. First principle: facts about what you ought to do are tightly bound-up with facts about what you have reason to do. For example, if you ought to watch Oppenheimer, then there must be more reason for you to watch Oppenheimer than for you not to watch it. Second principle: ought is ‘upwards monotonic’ – if it’s true that you ought to φ in some specific way, then you ought to φ. If you ought to wear red socks today, then you ought to wear socks today. This second principle is not only plausible on its face, but also follows from the widely-endorsed, standard quantificational semantics for ‘ought’.

    I argue that these two independently plausible principles are, in fact, incompatible. Respecting the connections between reasons and ought requires giving up monotonicity, and so requires giving up the standard semantics for deontic modals. We need something new. I sketch a non-monotonic meaning for ‘ought’ which builds the ought/reason connections right into the semantics itself, but also explains why monotonicity looked so attractive in the first place.

  • Sometimes we use ‘reason’ as a count noun, to pick out facts in the world. For example: “the fact that you like Greta Gerwig is a reason for you to watch Barbie”. Other times, we use ‘reason’ as a mass noun, to pick out something we can have more or less of. For example: “there is not much reason for you to watch Oppenheimer” or “there is more reason for you to watch Barbie than Oppenheimer”.

    It’s natural to think that the count sense of ‘reason’ comes first – to think that the meaning of a comparative like ‘there’s more reason to watch Barbie than Oppenheimer’ is comparing the weightiness of the particular reasons to watch one movie with the weightiness of the particular reasons to watch the other. I argue that this ‘count fundamentalist’ semantics is untenable: when we talk about what there’s reason to do, we’re not talking about the reasons that there are.

    I use this result to motivate a semantics for mass and count ‘reason’ which inverts the standard priority of reasons over reason. The central notion on this semantics isn’t there being a reason for S to φ, it’s there being some amount of reason for S to φ. I use this semantics to build an argument against the Reasons First programme (the enduringly popular idea that count noun reasons are normatively fundamental).

Papers

  • I ought to give more money to charity. I have to grade these papers by tomorrow. I should not be late to appointments. I must not steal money from my friends. There are good reasons for me to become a vegan. There’s some reason for me to be distrustful of politicians. There is no reason for me to avoid stepping on cracks in the sidewalk. I have more reason to tear the bandaid off quickly than to tear it off slowly.

    We turn to normative claims like these when we deliberate, advise, praise and chastise. Within philosophy, we appeal to reasons and oughts to state our theses and build our theories. But what do such claims mean? The goal of my dissertation is to shed light on this semantic question while illuminating various problems in ethics along the way.

    The three chapters of my thesis are unified by their focus on the ways in which we talk about what there’s reason to do. But the picture of normative talk that I develop there has a distinctive feature: the notion of a reason – roughly, a fact that counts in favour of something – isn’t given any fundamental role to play. Instead, this project’s central idea is that the meanings of ‘ought’, ‘must’ and ‘is a reason for...’ should all be cashed out in terms of facts about how much reason we have to do various things. It’s this gradable notion – the notion of there being some amount of reason to act – that drives our talk about the normative world.

    For semanticists and philosophers of language, the dissertation includes a novel argument against the standard semantics for deontic modals, and a new analysis of the meaning of ‘ought’ and ‘must’ in terms of reason-to-act. For ethicists, the central upshots of the project include a case against the enduringly popular idea that reasons are normatively fundamental, as well as an argument to the conclusion that there are normative reasons for animals, plants and artefacts to behave in some ways and not others. This latter argument has especially important upshots in metaethics: if there are normative reasons for non-agents, then we better not analyse what it is to be a normative reason in terms of distinctively agential materials, like the standards of good practical reasoning.

Dissertation Abstract

Photo credit: Gretchen Ertl

Photo credit: Gretchen Ertl