The Aristotelian Society

The Aristotelian Society

est. 1880

the postgraduate session


The Postgraduate Session occurs on the Saturday afternoon of the conference. All submissions are blind reviewed and a maximum of eight are selected for presentation. Only current postgraduate students (including those who have obtained a postgraduate degree within the past year) can submit for the Postgraduate Session. Each talk for the Postgraduate Session lasts up to 20 minutes and is followed by an additional 10 minutes for discussion.

Exemplary papers for the Postgraduate Session will be published in next year's Proceedings of the Aristotelian Society.

Theoretical Session

Vanessa Carr | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Created, Changeable, and yet Acausal?

Vanessa Carr (UCL)


There are entities, such as novels, poems, and games, amongst others, that seem both to have been created, and to be the kind of thing that can be changed. These entities also seem to be repeatable in a similar way to universals, numbers, and propositions. Repeatable entities are intuitively taken to have to be non-spatial, i.e. without any spatial location, and acausal, i.e. unable to causally interact with other entities. So, there are entities, including novels, poems and games, that we intuitively conceive of as created and changeable, and acausal. It has been suggested, however, that whatever is created, or changeable, must be causal. This suggestion is here rejected as, at best, founded only on an over-generalisation from our paradigmatic cases of creation and change: one spatial object creating, or changing, another spatial object. Consideration of our conception of novels, poems, and games, amongst other entities, encourages us to see the over-generalisation for what it is, and reject the idea that whatever is created, or changeable, must be causal. It is concluded, then, that our intuitive conception of novels, poems, and games, and the like, as created, changeable, and yet acausal is coherent, and should be upheld.


Vanessa Carr is a PhD candidate in philosophy at UCL, working primarily in metaphysics and philosophy of action. She completed the MPhilStud, also at UCL, and received a BA in Philosophy, Psychology and Physiology from the University of Oxford. Vanessa’s PhD research addresses the nature of activity, and examines the relationship between causation and activity.  She defends the existence of causation by agents, but challenges the viability of an account of activity in terms of causation by the agent.

Poppy Mankowitz | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

There Are No Category Mistakes

Poppy Mankowitz (St Andrews)


Sentences traditionally thought to exhibit category mistakes, such as 'The red number is divisible by three', generally elicit a sense of oddness. In attempting to explain this sense of oddness, extant accounts claim that such sentences possess a defect unique to the class of category mistakes. I begin by discussing unexpected data showing that no extant account can predict when complex sentences that include expressions like 'red number' will strike assessors as odd. Next, I argue that individuals' responses to sentences traditionally considered category mistakes closely reflect responses to certain sentences typically considered non-category mistakes. This provides evidence that general pragmatic mechanisms should be used to explain oddness responses elicited by all such sentences, whether or not they are traditional category mistakes. I conclude that there are no category mistakes; that is, there is no class of category mistake-exhibiting sentences consisting of all and only the sentences with a unique defect.


Poppy Mankowitz is a PhD candidate in philosophy at the Arché Philosophical Research Center, in the University of St Andrews. Previously, she completed an MPhilStud and BA at King's College London. She works primarily on the philosophy of language, semantics and metaphysics. Her current research centres on the way we structure information within discourse, and how attending to information structure can resolve a range of philosophical problems.

Benjamin Marschall | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Easy Ontology and Categorical Quantification

Benjamin Marschall (Cambridge)


In defending her deflationary, easy approach to ontology, Amie Thomasson relies on a controversial thesis about quantifiers: According to her, categorical quantification over things of a specific kind F is prior to bare quantification over objects in general. This priority thesis has been met with skepticism, since Thomasson is not very explicit about how categorical quantification could be fundamental. In my paper, I will show that we can make sense of her position by applying Thomasson’s sortal solution to the qua problem to the semantics of quantification: If sortals are needed to secure referents for names, they should be required for assigning objects to variables as well. On this interpretation, that categorical quantification is fundamental means that sortals are essential for variable assignments, and hence every element in the domain of quantification falls under a sortal. I then show that this construal indeed delivers the deflationary result Thomasson needs.


Benjamin Marschall is a PhD student at the University of Cambridge, working on deflationism in metaontology. In addition, he is also interested in the metasemantics of demonstratives and Kant’s views on mereology. Before coming to Cambridge he studied in Berlin (Humboldt University, BA and MA) and St Andrews / Stirling (MLitt).  

Alexander Roberts | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Imprecise Quantification

Alexander Roberts (Oxford)


Following David Lewis (1986), Ted Sider (2001) has famously argued that unrestricted first-order quantification cannot be vague. His argument was intended as a type of reductio: its strategy was to show that the mere hypothesis of unrestricted quantifier vagueness collapses into the claim that unrestricted quantification is precise. However, in this talk I consider various reconstructions of the argument and show that they can all be resisted. The theme will be that each reconstruction of the argument involves assumptions which advocates of vague quantification have independent reason to reject. These considerations will form the basis of a stable view of unrestricted quantifier vagueness. 


Alexander Roberts is a D.Phil student at the University of Oxford whose main research interests are in metaphysics and philosophical logic. Before starting his D.Phil, he received a B.Phil from Oxford and an undergraduate degree from Leeds. His D.Phil thesis is a collection of essays on the metaphysics and logic of metaphysical modality, each of which considers a challenge to idea that metaphysical modality is the maximal objective modality. His recent research has been on the metaphysics of higher-order modal logic and indefinite extensibility.

Practical Session

Marius Baumann | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

A New Position in Metaethics

Marius Baumann (Berne)


The paper introduces a new metaethical position: Constructive Deonticism (CD). CD claims that whereas we should believe in deontic truths – about which acts are right or wrong ­– we should suspend belief in explanatory truths – regarding what makes these act right or wrong – in ethics. This is analogous to Van Fraassen’s Constructive Empiricism in the philosophy of science, hence the name. The main argument for CD is outlined: the argument from moral under-determination. Two independent considerations are then offered in its support. Finally, it is discussed why CD should be considered a form of anti-realism.


Marius Baumann is a PhD student at the University of Berne. He received his BA in Philosophy and German Studies from the University of Zurich and his MA in Political, Legal, and Economic Philosophy from the University of Berne. During his PhD he was a visiting research student at Brown and Reading Universities. He is a recipient of a 4-year Doc.CH grant by the Swiss National Science Foundation. Beginning in Fall 18, he will be a Postdoc at LMU Munich. His main research interests are in normative ethics, metaethics, and the philosophy of science. His thesis defends the claim that just as scientific theories can be underdetermined by the empirical evidence, moral theories can be underdetermined by our deontic verdicts.

Claire Field | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Rational Incoherence: How to Make Mistakes About What Rationality Requires

Claire Field (St Andrews)


Sometimes it’s OK to make mistakes. I present a puzzle of epistemic rationality, and argue that the right strategy for dealing with it is one that says that sometimes rationality requires you to make mistakes, and sometimes it even requires you to make mistakes about rationality itself and what it requires of you. There are two significant consequences of the strategy I defend. One is that contrary to an increasingly popular line of thought in both the epistemological and ethical literatures, mistakes about the normative are of no more significance than mistakes about the non-normative. Secondly, contrary to widespread consensus, the enkratic principle not a requirement of rationality. I explain away the counter-intuitive consequences of denying the enkratic principle by distinguishing between two senses of rationality that have often been conflated - that of conformity to requirements and that of positive epistemic appraisal.


Claire Field is a PhD student at the University of St Andrews, with research interests in epistemology, ethics, and normativity. She is supervised by Jessica Brown and Brian Weatherson (Michigan), and she is a member of both the Arché Philosophical Research Centre and the Centre for Ethics, Philosophy, and Public Affairs at St Andrews. Her current work focuses on using an account of appraisal to solve a stubborn puzzle of epistemic rationality arising from misleading evidence about what rationality requires.

Ethan Jerzak | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Paradoxical Desires

Ethan Jerzak (Berkeley)


I present a paradoxical combination of desires. I show why it’s paradoxical, and consider ways of responding to the paradox. I show that we’re saddled with an unappealing disjunction: either we reject the possibility of the case, or we reject some bit of classical logic. I argue that denying the possibility of the case is unmotivated on any reasonable way of thinking about mental content. So, I argue, the best response is a non-classical one, according to which certain desires are neither determinately satisfied nor determinately not satisfied. I conclude by exploring connections with more traditional semantic paradoxes, and argue that this paradox requires a new way of thinking about propositional attitudes.


Ethan Jerzak is a PhD candidate at the University of California, Berkeley. This was interrupted by a stint at the MCMP in Munich, and preceded by a BA at the University of Chicago. He works mainly on language, logic, and epistemology. His dissertation is about what implications semantic paradoxes have for natural language semantics and theories of mental content. He's also interested in the concept of desire, and the dual role it plays in guiding and explaining action. 

David Russell Jenkins | Postgraduate Session | Joint Session of the Aristotelian Society and the Mind Association | Philosophy in London Since 1880

Doxastic agency and “making up our minds”

David Russell Jenkins (KCL)


I argue that the standard challenge to the suggestion that we are capable of exercising doxastic agency rests on a misconceiving of cases in which it is exercised. We can exercise doxastic agency by reasoning or inquiring because we can do so at will and because to do so can just be to exercise doxastic agency. This does not require that all of the constituent acts which make up one’s reasoning or inquiry are themselves performed at will. The latter suggestion trades on a misunderstanding of cases in which doxastic agency is alleged to be exercised as parallel to paradigm cases of “making up one’s mind” rather than to paradigm cases of “finding out whether ...” or “figuring out that ...”.


David Russell Jenkins is a philosophy Ph.D. candidate at King’s College London, with primary interests in the philosophy of mind and action. As of October 2018 he will be a post-doctoral fellow at Tel Aviv University, working with Dr Yair Levy on his project 'Taking Action First'. His current research concerns the nature of inference and how it plays its role in doxastic agency—agency over belief. Of concern is how we can be active with respect to our beliefs and can be responsible for our beliefs accordingly, despite that we do not decide what to believe. On his view, we exercise doxastic agency by engaging in the activities of reasoning and inquiry—a fact which has been obscured by focus on single acts such as inference and judgment.

further info

future joint sessions

2019 joint session:

july 2019

2020 joint session:

july 2020

2021 joint session:

july 2021

supplementary volume

The inaugural address and symposia for the Joint Session are published in the Proceedings of the Aristotelian Society, Supplementary Volume, which is published digitally and in hardcover every June. The Supplementary Volume is sent to subscribing members of the Society in categories 4 and 5.

Members in other categories can purchase the hardcover Supplementary Volume from the Online Shop. Volumes will also be available at the registration desk during the conference.

Subscriptions to the Supplementary Volume also includes online access via Wiley Online Library (please note that one-off purchases of the hardcover volume do not include membership or online access).

The 2018 Joint Session of the Aristotelian Society and the Mind Association | Cardiff University

past conferences

2017 joint session:

14 - 16 july 2017

2016 joint session:

8 - 10 july 2016

2015 joint session:

10 - 12 july 2015

subscribing memberships

Subscribing members receive online access to the Proceedings from 2000 to the most current issue.

Subscribing members also receive the bound, hardcover volume of the latest Proceedings through the post.