In “The Argument for Subject Body Dualism from Transtemporal Identity Defended” (PPR 2013), Martine Nida-Rümelin (NR) responded to my (PPR 2013) criticism of her (2010) argument for subject-body dualism. The crucial premise of her (2010) argument was that there is a factual difference between the claims that in a fission case the original person is identical with one, or the other, of the successors. I argued that, on the three most plausible interpretations of ‘factual difference’, the argument fails. NR (...) responds that I missed the intended, fourth interpretation, and that, in any case, with an additional assumption, the argument on the third interpretation goes through. I argue that the fourth interpretation, while insufficient as stated, reveals an assumption that provides an independent argument, namely, that in first person thought about future properties we have a positive conception of the self that rules out having empirical criteria of transtemporal identity. I argue that the considerations offered for this thesis fail to establish it, and that we do not bring ourselves under any positive conception in first person thought. I argue also that on the third interpretation, the first premise of the argument is inconsistent with the necessity of identity. (shrink)

Jacob Ross argues that the fission cases discussed in the personal identity literature cannot be accommodated without rejecting basic intuitions of everyday ethical thinking. He notes that many philosophers have responded to the challenge of fission ‘by rejecting the metaphysical assumptions on which it rests’. In particular, that many have denied that in fission one ceases to exist. He contends that these denials do not meet the challenge to commonsense ethical thinking. I reject these claims. One (...) of the metaphysical views he considers is the multiple occupancy view of Lewis and Robinson, according to which in fission there are all along two numerically distinct, initially collocated, persons. I claim that Ross has not shown that this view has counterintuitive ethical implications. (shrink)

Consider a specific type of fission where psychological continuity takes a branching form, and one of the offshoots comes into being later than the other offshoot. Let us say that the earlier offshoot comes into being in the left branch at t, and the later offshoot comes into being in the right branch at t+1. With regard to the question how many persons are involved in this case, three answers are worth considering: (i) The original subject persists up to (...) t; a distinct person comes into being immediately after t and continues to exist in the left branch; and the third person comes into being in the right branch at t+1. (ii) The original subject persists up to the moment immediately before t+1; a distinct person comes into being at t+1 and continues to exist in the left branch; and the third person comes into being in the right branch at t+1. (iii) The original subject continues to exist in the left branch; a distinct person comes into being in the right branch at t+1. For those who hold that personal identity consists in psychological continuity of some sort, the aforementioned three options exhaust the sensible ways of understanding how one persists in delayed fission. However, I argue that complications arise for each answer. Hence, delayed fission poses a challenge for the psychological approach to personal identity. (shrink)

Derek Parfit famously defends a number of surprising views about "fission." One is that, in such a scenario, it is indeterminate whether I have survived or not. Another is that the fission case shows that it does not matter, in itself, whether I survive or not. Most critics of the first view contend that fission makes me cease to exist. Most opponents of the second view contend that fission does not preserve everything that matters in ordinary (...) survival. In this paper I shall provide a critique that does not rely on either of these contentions. There are other, interrelated reasons to reject Parfit's defense of the two theses. In particular, the availability of the following view creates trouble for Parfit: I determinately survive fission, but it is indeterminate which fission product I am. (shrink)

When an agent undergoes fission, how should the beliefs of the fission results relate to the pre-fission beliefs? This question is important for the Everett interpretation of quantum mechanics, but it is of independent philosophical interest. Among other things, fission scenarios demonstrate that ‘self-locating’ information can affect the probability of uncentred propositions even if an agent has no essentially self-locating uncertainty. I present a general update rule for centred beliefs that gives sensible verdicts in cases (...) of fission, without relying on controversial metaphysical or linguistic assumptions. The rule is supported by the same considerations that support standard conditioning in the traditional framework of uncentred propositions. (shrink)

Johansson, in “Parfit on Fission,” rejects Parfit’s thesis that fission demonstrates that identity does not matter in survival based on the following assumption (call the person who fissions, “Mr. Fissiony” and the fission products, “Lefty” and “Righty”): It is determinately true that Mr. Fissiony is identical to Lefty or that he is identical to Righty, but it is indeterminate whether Mr. Fissiony is identical to Lefty and it is indeterminate whether Mr. Fissiony is identical to Righty. Johansson (...) argues that there are identity-based answers to the following questions that apply in fission case: (Future Time) Concerning any future time, what matters in my relation to it? (Future Person) Concerning any future individual, what matters in my relation to him? The identity-based answers are these: (Future Time Answer) That I am identical with someone at that time. (Future Person Answer) That it is not false that I and that future individual are identical and that this relation of it not being false that we are identical is not close to not obtaining. I argue that the combination of these answers is inconsistent with the implication that if person C1 at t1 stands in the mattering relation to person C2 at t2, then C1 gets what matters with respect to t2 and that the degree to which the relation specified in Future Person Answer holds between Mr. Fissiony and Lefty in the fission case does not match up to the degree to which Mr. Fissiony gets what matters with respect to Lefty. (shrink)

In this discussion paper, I evaluate some arguments of Mark Johnston's which appear in his articles «Fission and the Facts» and «Reasons and Reductionism» . My primary concern is with his description of fission cases, and his assessment of the implications of such cases for value theory. In particular, Johnston advances the following three claims:Rejecting the intrinsicness of identity is an arbitrary response to the paradox of fission;Fission cases involve indeterminate identity;Contra Parfit, (...) class='Hi'>fission cases have no implications for value theory in the actual world.I argue that and are false, and that , if true, is not true for any reason that Johnston gives. (shrink)

In his work on personal identity, Derek Parfit makes two revolutionary claims: firstly, that personal identity is not what matters in survival; and secondly, that what does matter is relation R. In this article I demonstrate his position here to be inconsistent, with the former claim being defensible only in case the latter is false. Parfit intends his famous fission argument to establish the unimportance of identity – a conclusion disputed by, among others, Mark Johnston. My approach is to (...) critically assess their debate, focusing on Johnston's reductio of Parfit's position. I contend that although Parfit's own response fails, there are other ways to save the fission argument. The unimportance of identity then comes at a cost, however, because the reductio can only be avoided by accepting either that nothing matters in survival, or else that facts about particles and forces do. Either way, relation R cannot be what matters. (shrink)

This book presents, in method, logical form, and philosophical content, a counterproposal to mainstream personal identity theory. The lotter's purported conflation of logical questions, i.e. reidentification with characterization, leads to an implausible reductionism about selves. A self-constituting narrative is the basis for identity, and contra reductionism, the ontological primitive of a person. As a dynamic valuational and intentional system, the narrative meaningfully constructs the autobiographical past through memory and both causally directs and emotively anticipates the experiences and form of future (...) selves. Schechtman's account, in contrast to mainstream theories, rightly connects identity to those four features that weigh heavily in our values, viz. survival, self-concern, responsibility, and compensation. Though bold and original, the account dispels a couple of important issues along with its rejection of mainstream theory. These issues, encountered most notably through fission cases, are taken up in the evaluation with a “narrative split”. (shrink)

I introduce a new approach to fission puzzles called the Diversified Approach that proceeds by distinguishing different kinds of fission and assimilating each kind to a different ordinary phenomenon, such as breaking apart, replication, or part loss. To illustrate this approach, I apply it to the case of amoebic fission. The upshot is a novel account of amoebic fission according to which the dividing amoeba ceases to exist because it breaks apart. After developing this solution and (...) highlighting some of its advantages, I discuss briefly how the Diversified Approach can be extended to other varieties of fission. (shrink)

Abstract: Those who endorse the Psychological Continuity Approach (PCA) to analyzing personal identity need to impose a non-branching constraint to get the intuitively correct result that in the case of fission, one person becomes two. With the help of Brueckner's (2005) discussion, it is shown here that the sort of non-branching clause that allows proponents of PCA to provide sufficient conditions for being the same person actually runs contrary to the very spirit of their theory. The problem is first (...) presented in connection with perdurantist versions of PCA. The difficulty is then shown to apply to endurantist versions as well. -/- . (shrink)

Most versions of the psychological-continuity approach to personal identity (PCA) contain a 'non-branching' requirement. Recently, Robert Francescotti has argued that while such versions of PCA handle Parfit's standard fission case well, they deliver the wrong result in the case of an intact human brain. To solve this problem, he says, PCA-adherents need to add a clause that runs contrary to the spirit of their theory. In this response, I argue that Francescotti's counterexample fails. As a result, the revision he (...) suggests is not needed. (shrink)

Those who endorse the Psychological Continuity Approach (PCA) to analyzing personal identity need to impose a non-branching constraint to get the intuitively correct result that in the case of fission, one person becomes two. With the help of Brueckner's (2005) discussion, it is shown here that the sort of non-branching clause that allows proponents of PCA to provide sufficient conditions for being the same person actually runs contrary to the very spirit of their theory. The problem is first presented (...) in connection with perdurantist versions of PCA. The difficulty is then shown to apply to endurantist versions as well. (shrink)

What happens to a person in a case of fission? Does it survive? Does it go out of existence? Or is the outcome indeterminate? Since each description of fission based on the persistence conditions associated with our ordinary concept of a person seems to clash with one or more platitudes of common sense about the spatiotemporal profile of macroscopic objects, fission threatens the common-sense conception of persons with inconsistency. Standard responses to this paradox agree that the common-sense (...) conception of persons is unstable, differing over which part of the conception requires revision. I will show that this entrenched view of fission is not compulsory. I will develop a solution to the paradox that maintains the consistency of the common-sense conception of persons on the basis of an ontology of persons and other ordinary objects as double-layered compounds. Each of various descriptions of the outcome of personal fission is compatible with principles about the spatiotemporal profile of persons, because the descriptions and the principles manifest different perspectives on persons and are made true or false by different ontological components of the latter. What holds for the fission of persons, holds for the fission of other kinds of objects. (shrink)

Advocates of occasional identity have two ways of interpreting putative cases of fission and fusion. One way—we call it the Creative view—takes fission to involve an object really dividing (or being replicated), thereby creating objects which would not otherwise have existed. The more ontologically parsimonious way takes fission to involve merely the ‘separation’ of objects that were identical before: strictly speaking, no object actually divides or is replicated, no new objects are created. In this paper we (...) recommend the Creative approach as the best way of dealing with certain problem cases involving teletransportation. Our considerations yield novel takes on psychological-continuity theories of personal identity and survival, and on the puzzle of Theseus' ship. (shrink)

One of Parfit’s arguments for the thesis that identity never matters involves generalizing from “divergence” cases in which identity arguably does not matter. The primary divergence case for Parfit is fission. According to Parfit’s assessment, it is not true that the fissioner gets what matters with respect to either fissionee by way of being identical to each fissionee but does so by way of the M-relation, psychological continuity with its normal cause, the persistence of enough of the brain. (...) The same is true in all other divergence cases by Parfit’s accounting. Parfit generalizes. From (E) Whenever M and identity diverged, it would be M that mattered, not identity. Parfit infers (F) Whenever M and identity diverge and even when these relations coincide, it is M that matters, not identity. In this paper, I challenge the inference from (E) to (F). (shrink)

There is a debate regarding the function of Drp1, a GTPase involved in mitochondrial fission, during the elimination of mitochondria by autophagy. A number of experiments indicate that Drp1 is needed to eliminate mitochondria during mitophagy, either by reducing the mitochondrial size or by providing a noncanonical mitophagy function. Yet, other convincing experimental results support the conclusion that Drp1 is not necessary. Here, we review the possible functions for Drp1 in mitophagy and autophagy, depending on tissues, organisms and stresses, (...) and discuss these apparent discrepancies. In this regard, it appears that the reduction of mitochondria size is often required for mitophagy but not always in a Drp1‐dependent manner. Finally, we speculate on Drp1‐independent mitochondrial fission mechanism that may take place during mitophagy and on noncanonical roles, which Drp1 may play such as modulating organelle contact sites dynamic during the autophagosome formation. (shrink)

Many philosophers believe that identity through time cannot depend on features extrinsic to the relata and relations between them. This goes with the view that one must deny identity in cases for which there is a ‘duplication case’-a case just like the first, but for an additional, ‘external’ element which provides an equal or better ‘candidate’ for identity with one of the relata. Such friends of intrinsicness cannot remedy the failure of continuity of function/form to be one-one by non-branching (...) or closest competitor clauses. The obvious intrinsic approach-perhaps taken for granted-appeals to considerations of quantity of matter, requiring over 50% shared matter between identicals . But this rules out plausible cases of halving and doubling for which there are not duplication cases. After bringing out this problem, I ask what makes duplication cases possible, and use this to formulate an intrinsic condition which allows identity whenever there is continuity of function, but no threat to intrinsic ness via duplication cases. (shrink)

Martine Nida-Rümelin has argued recently for subject-body dualism on the basis of reflections on the possibility of survival in fission cases from the literature on personal identity. The argument focuses on the claim that there is a factual difference between the claims that one or the other of two equally good continuers of a person in a fission case is identical with her. I consider three interpretations of the notion of a factual difference that the argument employs, (...) and I argue that on each of them the argument either begs the question or is unsound. (shrink)

In general terms there are only three primary energy sources: fossil fuels, renewable energy, and nuclear fission. For fueling road transportation, there has been much speculation about the use of hydrogen as an energy carrier, which would usher in the “hydrogen economy.” A parallel situation would use a simple battery to store electricity directly in order to power vehicles. The efficiency of these two different approaches has been compared and shows that the hydrogen and fuel cell system would consume (...) nearly three times the primary energy required by a battery storage system. Successful introduction into the marketplace of the plug-in hybrid vehicle would eliminate the need for road vehicles to use petroleum fuels, at least for the majority of miles traveled. If electricity were to be generated primarily from sustainable primary energy sources, then road transportation would also become sustainable, resulting in an “electricity economy” rather than a “hydrogen economy.”. (shrink)

This volume describes the current "main contenders," including neo-Piagetian, neo-connectionist, neo-innatist and sociocultural models.

Many philosophers have noted that normative error theorists appear to be committed to saying ‘Error theory is true, but I have no reason to believe it’, which seems paradoxical. In defence of error...

Normative pluralism is the view that practical reason consists in an irreducible plurality of normative domains, that these domains sometimes issue conflicting recommendations and that, when this happens, there is never any one thing that one ought simpliciter to do. Here I argue against this view, noting that normative pluralism must be either unrestricted or restricted. Unrestricted pluralism maintains that all coherent standards are reason-generating normative domains, whereas restricted pluralism maintains that only some are. Unrestricted pluralism, depending on how it (...) is cashed out, is either nihilism about practical reason or else it is subjectivism. Neither view is consistent with normative pluralism; hence, pluralism must be restricted. Restricted pluralism, however, faces two problems. The first stems from the question: “Why is it that some standards are normative domains while others are not?” The question seems to demand an answer, but it is hard to give any answer without appealing to considerations that imply facts about what we ought simpliciter to do. Second, restricted pluralism has difficulty accounting for our intuitions about cases in which one option is optimal in all domains, but not better than each alternative in any one domain. The unique option that is optimal in every domain seems better than its competitors, though it isn’t better within any domain. This is different than the widely discussed argument from notable-nominal comparisons. So I conclude that we have good reason to reject restricted pluralism, the only form of normative pluralism really worthy of that name. (shrink)

Epistemic injustice occurs when we fail to appropriately respect others as epistemic agents. Philosophers building on the work of Miranda Fricker, who introduced the concept, have focused on epistemic injustices involving certain social categories, particularly race and gender. Can there be epistemic injustice attached to political conviction and affiliation? I argue yes: politics can be a salient social category that draws epistemic injustice. Epistemic injustices might also be intersectional, based on the overlap of politics and some other identity category like (...) race or sex. Further, and more provocatively, I argue that political minorities in academia, in particular conservatives and libertarians, are most likely the victims of epistemic injustice on the basis of their politics. Such epistemic injustices might even be routine. Although more limited in scope and severity than other forms of epistemic injustice, political epistemic injustices in academia ought to be of special concern from a standpoint of social justice because of the academy’s central role in knowledge production and dissemination. (shrink)

Many philosophers have thought that aggregates of small, broadly dispersed evils don’t pose the same sort of challenge to theism that horrendous evils like the Nazi Holocaust do. But there are interesting arguments that purport to show that large enough aggregates of small evils are morally and axiologically equivalent to horrendous evils. Herein lies an intriguing and overlooked strategy for defending theism. In short: small evils, or aggregates of such evils, don’t provide decisive evidence against theism; there’s no relevant difference (...) between horrendous evils and aggregates of small evils; hence horrendous evils must not provide decisive evidence against theism, either. (shrink)

The word ‘extremist’ is often used pejoratively, but it’s not clear what, if anything, is wrong with extremism. My project is to give an account of moral extremism as a vice. It consists roughly in having moral convictions so intense that they cause a sort of moral tunnel vision, pushing salient competing considerations out of mind. We should be interested in moral extremism for several reasons: it’s consequential, it’s insidious – we don’t expect immorality to arise from excessive devotion to (...) morality – and it’s yet to attract much philosophical attention. I give several examples of moral extremism from history and explore their social-political implications. I also consider how we should evaluate people who miss the mark, being either too extreme in the service of a good cause or inconsistent with their righteous convictions. I compare John Brown and John Quincy Adams, who fell on either side of this spectrum, as examples. (shrink)

This article proposes that we recognize ‘accountability’ as a forward-looking virtue, which disposes its possessors to live accountably in relation to those to whom they are rightly answerable, and which can be sub-divided into ‘particular accountability’, exercised within specific and limited relationships, and ‘ultimate accountability’, regarding the shape of one’s life as a whole. The article then proposes that these two forms of accountability find close analogues in two virtues which Thomas Aquinas described as ‘annexed to justice’, namely ‘obedience’ and (...) ‘religion’. (shrink)

The present ecological crisis imposes a rethinking of the relation between the human being and the rest of nature. Traditional theological articulations of this relation have proven problematic where they foster separatism and anthropocentrism, which give a false report on the relation and have a negative impact on thinking and acting in relation to nature. One place to begin rethinking is through an exploration of the affirmation that the human being is “made in the image of God,”imago dei. Some ways (...) of construing the theological meaning of this designation are more helpful than others. Science has recognized the extent to which the human being is not only dependent upon but even emergent from nature. We are made of the same “stuff” that makes up the rest of the universe. We are nature. The place of the human being is much more modest, recent, and precarious than usually acknowledged in theological reflection. New ways of interpreting our role within nature must evolve out of this new understanding. Philip Hefner has proposed that we think of the human being as created co-creator. His is a distinctive and promising contribution. This essay responds with both affirmations and friendly questions. (shrink)

Although wisdom might be considered a quaint concept in a post-industrialised, instrumental and secular world, it deserves serious consideration. This is done primarily from a philosophical perspective and is intended to encourage the reintroduction of wisdom into educational and developmental programmes, especially for managers and leaders. Mindful of the potential naïvete of transplanting systems of thinking from one epoch to another, we nonetheless examine the relevance of pre-modern thought to the post-modern condition. This is done by radically reinterpreting classical Greek (...) texts as Pierre Hadot has done to derive a meaning of "philosophy" and the place of wisdom in the ancient world. The concepts of wisdom, virtue and enacted ethics derived from this re-interpretation are then applied to an ethnographic case study involving a senior executive. This study suggests that a Stoical "wisdom of the moment" philosophy may characterize contemporary leadership practice. (shrink)

This paper investigates some delicate tradeoffs between the generality of an algorithmic learning device and the quality of the programs it learns successfully. There are results to the effect that, thanks to small increases in generality of a learning device, the computational complexity of some successfully learned programs is provably unalterably suboptimal. There are also results in which the complexity of successfully learned programs is asymptotically optimal and the learning device is general, but, still thanks to the generality, some of (...) those optimal, learned programs are provably unalterably information deficient—in some cases, deficient as to safe, algorithmic extractability/provability of the fact that they are even approximately optimal. For these results, the safe, algorithmic methods of information extraction will be by proofs in arbitrary, true, computably axiomatizable extensions of Peano Arithmetic. (shrink)

Hay and, then, Johnson extended the classic Rice and Rice-Shapiro Theorems for computably enumerable sets, to analogs for all the higher levels in the finite Ershov Hierarchy. The present paper extends their work to analogs in the transfinite Ershov Hierarchy. Some of the transfinite cases are done for all transfinite notations in Kleene's important system of notations, equation image. Other cases are done for all transfinite notations in a very natural, proper subsystem equation image of equation image, where (...) equation image has at least one notation for each constructive ordinal. In these latter cases it is open as to what happens for the entire set of transfinite notations in equation image. (shrink)

In the year 308 CE, the African army raised to the purple the agens vices praefectorum praetorio Lucius Domitius Alexander. This rather unique case of a vicarius becoming emperor is deserving of investigation. Scholarly interest on the matter has traditionally focused on the broader political significance, treating Alexander as a traditional usurper. This paper argues that, contrary to traditional studies, the regime of Alexander focused on very local, African tropes. The uniqueness of the advertisement suggests that this African usurpation was (...) the product of discontent internal to Africa; in other words, it is a departure from the usurpations of the third century. The achievements of Diocletian, who supposedly stabilized the Empire, ended when he withdrew, and the rebellion of 308–310 demonstrates that there remained unaddressed tensions between the provinces and the remaining tetrarchs. (shrink)