•  285
    Conditional probabilities
    Analysis 72 (3): 488-491. 2012.
    A simple argument is given that shows that conditional probabilities do not supervene on unconditional probabilities. In particular, one cannot in general define conditional probabilities using the ratio formula P ( U | V ) = P ( U & V )/ P ( U ), or using any more sophisticated method based on unconditional probabilities
  •  310
    Review of Graham Oppy, Arguing About Gods (review)
    Notre Dame Philosophical Reviews 2007 (5). 2007.
  •  156
    Cosmological and design arguments
    with Richard M. Gale
    In William J. Wainwright (ed.), The Oxford handbook of philosophy of religion, Oxford University Press. pp. 116--137. 2005.
    The cosmological and teleological argument both start with some contingent feature of the actual world and argue that the best or only explanation of that feature is that it was produced by an intelligent and powerful supernatural being. The cosmological argument starts with a general feature, such as the existence of contingent being or the presence of motion and uses some version of the Principle of Sufficient Reason to conclude that this feature must have an explanation. The debate then focus…Read more
  •  374
    Incompatibilism proved
    Canadian Journal of Philosophy 43 (4): 430-437. 2013.
    (2013). Incompatibilism proved. Canadian Journal of Philosophy. ???aop.label???
  •  324
    Possibility is not consistency
    Philosophical Studies 172 (9): 2341-2348. 2015.
    We shall use Gödel’s Second Incompleteness Theorem to show that consistency is not possibility, and then argue that the argument does serious damage to some theories of modality where consistency plays a major but not exclusive role
  •  29
    Much of the discussion had focussed on the question of whether religious experiences are veridical, but then Richard M. Gale asked a more fundamental question: Are they even cognitive? An experience is cognitive if it takes an intentional accusative, such as “red cube” in “I see a red cube,” as opposed to the cognate accusative exemplified by the use of the word “waltz” in “I am dancing a waltz” which is synonymous with “I am dancing waltzily.” Cognitive experiences are objective in the sense th…Read more
  •  129
    Problems with plurals
    Oxford Studies in Metaphysics 9. 2015.
    Plural quantification, often used to evade Russell paradoxes, will lead back to them, given certain assumptions about propositions. This chapter provides a more generalized version of the path to paradox by showing that any theory that makes possible the construction of an appropriate packaging relation falls prey to a Russell paradox. It gives examples of widely-held metaphysical theories that require such a relation. It shows that the paradoxes that can result from plural quantification are mo…Read more
  •  93
    Freedom, Will, and Nature
    Proceedings of the American Catholic Philosophical Association 81 25-27. 2007.
  •  149
    Philosophy and Language
    Proceedings of the American Catholic Philosophical Association 84 213-222. 2010.
    I shall discuss the problem of the definition of lying and the formulation of the duty of truthtelling. I shall argue that the morality of assertion is a special case of the morality of endorsement, and that a criterion of adequacy for an account of lying is that it handles certain cases of dishonest endorsement as well. Standardviews of lying fail to do so. I shall offer an account of the duty of honest endorsement in terms of the intention to avoid falsehood. But, in the end, we may simplyhave…Read more
  •  18
  •  381
    The ontological argument and the motivational centres of lives
    Religious Studies 46 (2): 233-249. 2010.
    Assuming S₅, the main controversial premise in modal ontological arguments is the possibility premise, such as that possibly a maximally great being exists. I shall offer a new way of arguing that the possibility premise is probably true
  •  18
    I argue that standard functionalism leads to absurd conclusions as to the number of minds that would exist in the universe if persons were duplicated
  •  452
    A response to Oppy, and to Davey and Clifton
    with Richard M. Gale
    Religious Studies 38 (1): 89-99. 2002.
    Our paper ‘A new cosmological argument’ gave an argument for the existence of God making use of the weak Principle of Sufficient Reason (W-PSR) which states that for every proposition p, if p is true, then it is possible that there is an explanation for p. Recently, Graham Oppy, as well as Kevin Davey and Rob Clifton, have criticized the argument. We reply to these criticisms. The most interesting kind of criticism in both papers alleges that the W-PSR can be justifiably denied by the atheist, a…Read more
  •  318
    The cardinality objection to David Lewis's modal realism
    Philosophical Studies 104 (2): 169-178. 2001.
    According to David Lewis's extreme modal realism, every waythat a world could be is a way that some concretely existingphysical world really is. But if the worlds are physicalentities, then there should be a set of all worlds, whereasI show that in fact the collection of all possible worlds is nota set. The latter conclusion remains true even outside of theLewisian framework.
  •  1
              The production of a number of vaccines involves the use of cell-lines originally derived from fetuses directly aborted in the 1960s and 1970s. Such cell-lines, indeed sometimes the very same ones, are important to on-going research, including at Catholic institutions. The cells currently used are removed by a number of decades and by a significant number of cellular generations from the original cells. Moreover, the original cells extracted from the bodies of the aborted f…Read more
  •  12
    Case 1 (transplant) . You are a surgeon doing an appendectomy on Fred, who is otherwise healthy. You know from his file that, just by chance, his heart, lungs, bone marrow, liver and two kidneys are a perfect match for fifteen patients in your hospital who need various organs or bone marrow, of both of which there is a severe shortage of these organs; Fred, however, has refused to donate anything. If the fifteen patients do not receive the transplants today, they will die. You skillfully use you…Read more
  •  17
    In the first chapter of Romans, Paul tells us that the power and deity of God are evident from what he has created. One reading of this is that there is an argument from the content of what has been created. Thus, the Book of Wisdom, which may well have been the source of Paul’s ideas here, says that “from the greatness and beauty of created things their original author, by analogy, is seen” (13:5, NAB). This is a kind of teleological or design argument. But one might also argue instead from gen…Read more
  •  61
    Complicity, Fetal Tissue, and Vaccines
    The National Catholic Bioethics Quarterly 6 (3): 461-470. 2006.
  •  229
    Prophecy without middle knowledge
    Faith and Philosophy 24 (4): 433-457. 2007.
    While it might seem prima facie plausible that divine foreknowledge is all that is needed for prophecy, this seems incorrect. To issue a prophecy, God hasto know not just how someone will act, but how someone would act were the prophecy issued. This makes some think that Middle Knowledge is required.I argue that Thomas Flint’s two Middle Knowledge based accounts of prophecy are unsatisfactory, but one of them can be repaired. However the resources needed for repair also yield a sketch of a forek…Read more
  •  30
    The A-theory of time states that there is an absolute fact of the matter about what events are, respectively, in the past, present and future. The B-theory says that all there is to temporality are the relations of earlier-than, later-than and simultaneous-with, and the past, present and future are merely relative.
  •  43
    I argue against psychological theories of identity that claim that in cases where one’s personality and memories are moved into the brain of another, we move with them. I am not entirely convinced by my arguments here, I must confess, but I think they deserve some thought.
  •  6
    Programs, bugs, DNA and a design argument
    In Yujin Nagasawa & Erik Wielenberg (eds.), New Waves in Philosophy of Religion, Palgrave Macmillan. 2008.
  •  235
    A New Way to Reconcile Creation with Current Biological Science
    Proceedings of the American Catholic Philosophical Association 85 213-222. 2011.
    I shall argue that, appearances to the contrary notwithstanding, current biological science does not rule out the possibility of miraculous intervention in the evolutionary history of human beings. This shows that it is possible to reconcile evolutionary science with the claim that we are designed by God.
  •  255
    Time without Creation?
    Faith and Philosophy 31 (4): 401-411. 2014.
    We introduce three arguments for the thesis that time cannot exist prior to an original creation event. In the first argument, we seek to show that if time doesn’t depend upon creation, then time is infinite in the backwards direction, which is incompatible with arguments for a finite past. In the second and third arguments, we allow for the possibility of backwards-infinite time but argue that God could not have a sufficiently good reason to refrain from creating for infinitely many moments—eit…Read more
  •  25
    The pseudonymous author of this article argues that neither Kierkegaard nor Climacus in the Concluding Unscientific Postscript are claiming that Christian beliefs are nonsense or contradictory, but that it is contrary to universal epistemic norms to believe these beliefs or even to believe they can be believed. In an appendix for which the rest of the article is a preparation the author gives an interpretation of the pseudonymity and form-content contradiction and of how Kierkegaard in a sense a…Read more
  •  79
    One Body: Overview
    Roczniki Filozoficzne 63 (3): 7-19. 2015.
    I offer a reading of my book One Body on Christian sexual ethics as an application of Inference to Best Explanation based on theological and philosophical data.
  •  82
    I argue that it is possible for a human animal to survive the loss of all bodily parts other than the brain
  •  305
    The essential divine-perfection objection to the free-will defence
    Religious Studies 44 (4): 433-444. 2008.
    The free-will defence (FWD) holds that the value of significant free will is so great that God is justified in creating significantly free creatures even if there is a risk or certainty that these creatures will sin. A difficulty for the FWD, developed carefully by Quentin Smith, is that God is unable to do evil, and yet surely lacks no genuinely valuable kind of freedom. Smith argues that the kind of freedom that God has can be had by creatures, without a risk of creatures doing evil. I shall s…Read more
  •  84
    “Ex nihilo nihil fit,” goes the classic adage: nothing comes from nothing. Parmenides used the Principle of Sufficient Reason to argue that there was no such thing as change: If there was change, why did it happen when it happened rather than earlier or later? “Nothing happens in vain, but everything for a reason and under necessitation,” claimed Leucippus. Saint Thomas insisted in the.