•  33
    Centered around our knowledge of mathematical, modal, and a priori truths, this is a collection that celebrates the work of Keith Hossack, who, throughout his career, has made outstanding contributions to the theory of knowledge, metaphysics, and the philosophy of mathematics. Starting with a focus on our knowledge of abstract entities such as mathematical objects and the source of the necessity of mathematical truths, attention moves to the notion of necessity and its interaction with a priori…Read more
  •  14
    Susan Stebbing’s Logical Interventionism
    History and Philosophy of Logic 42 (2): 101-117. 2021.
    We examine a contribution L. Susan Stebbing made to the understanding of critical thinking and its relation to formal logic. Stebbing took expertise in formal logic to authorise logical intervention in public debate, specifically in assessing of the validity of everyday reasoning. She held, however, that formal logic is purely the study of logical form. Given the problems of ascertaining logical form in any particular instance, and that logical form does not always track informal validity, it is…Read more
  •  173
    This thesis is an argument for the view that there are problems for Modal Reductionism, the thesis that modality can satisfactorily be defined in non-modal terms. I proceed via a case study of David Lewis’s theory of concrete possible worlds. This theory is commonly regarded as the best and most influential candidate reductive theory of modality. Based on a detailed examination of its ontology, analysis and justification, I conclude that it does badly with respect to the following four minimal c…Read more
  •  84
    Cases of grounding failure present a puzzle for fundamental metaphysics. Typically, solutions are thought to lie either in adding ontology such as haecceities or in re‐describing the cases by means of the ideology of metaphysical indeterminacy. The controversial status of haecceities has led some to favour metaphysical indeterminacy as the way to solve the puzzle. We consider two further treatments of grounding failure each of which, we argue, is a more plausible alternative. As such, the initia…Read more
  •  46
    Wittgenstein: Opening Investigations by Michael Luntley (review)
    Philosophy 92 (1): 143-147. 2017.
    A review of Wittgenstein: Opening Investigations, by Michael Luntley (2015, Wiley).