In this paper, we investigate the diachronic fittingness conditions of admiration – that is, what it takes for a person to continue or cease to be admirable over time. We present a series of cases that elicit judgements that suggest different understandings of admiration over time. In some cases, admirability seems to last forever. In other cases, it seems that it can cease within a person’s lifetime if she changes sufficiently. Taken together, these cases highlight what we call (...) the puzzle of admiration over time. We then present a potential solution to this puzzle. (shrink)

The paper argues against a widely held synchronic view of emotional rationality. I begin by considering recent philosophical literature on various backward‐looking emotions, such as regret, grief, resentment, and anger. I articulate the general problem these accounts grapple with: a certain diminution in backward‐looking emotions seems fitting while the reasons for these emotions seem to persist. The problem, I argue, rests on the assumption that if the facts that give reason for an emotion remain unchanged, the emotion remains fitting. However, (...) I argue there are rationally self‐consuming attitudes: affective attitudes that become less fitting the longer they endure while the facts that give reason for them persist. A widely held synchronic view of fitting affective attitudes denies that fittingness at a time depends on the agent's attitudes at different times and therefore denies that the fittingness of an affective attitude can depend on its duration. Once we reject the synchronic view, we may see that affective attitudes are often fitting due to the fitting processes of which they are part. These fitting processes explain the fitting diminution of backward‐looking emotions as well as other diachronic aspects of the fittingness of emotions. -/- . (shrink)

ABSTRACT Some epistemologists hold that all rational norms are fundamentally concerned with the agent’s states or attitudes at an individual time [Hedden 2015, 2016; Moss 2015]; others argue that all rational norms are fundamentally concerned with processes [Podgorski 2017]. This distinction is not drawn in discussions of emotional rationality. As a result, a widely held assumption in the literature on emotional rationality has gone unexamined. I employ Abelard Podgorski’s argument from rational delay to argue that many emotional norms are fundamentally (...) concerned with emotional processes. I also claim that the main response available to the synchronist about belief is not available to the synchronist about emotions and, therefore, fundamental process norms are more plausible than epistemologists tend to believe. (shrink)

This paper draws on the 'Fitting Attitudes' analysis of value to argue that we should take the concept of fittingness (rather than value) as our normative primitive. I will argue that the fittingness framework enhances the clarity and expressive power of our normative theorising. Along the way, we will see how the fittingness framework illuminates our understanding of various moral theories, and why it casts doubt on the Global Consequentialist idea that acts and (say) eye colours are (...) normatively on a par. We will see why even consequentialists, in taking rightness to be in some sense determined by goodness, should not think that rightness is conceptually reducible to goodness. Finally, I will use the fittingness framework to explicate the distinction between consequentialist and deontological theories, with particular attention to the contentious case of Rule Consequentialism. (shrink)

The normative notion of fittingness figures saliently in the work of a number of ethical theorists writing in the late nineteenth and mid-twentieth centuries and has in recent years regained prominence, occupying an important place in the theoretical tool kits of a range of contemporary writers. Yet the notion remains strikingly undertheorized. This article offers a (partial) remedy. I proceed by canvassing a number of attempts to analyze the fittingness relation in other terms, arguing that none is fully (...) adequate. In explaining why various analyses of fittingness fail, I draw into relief certain of the relation’s constitutive features and spotlight some of its interesting and important connections to various other properties. Along the way, I highlight the relation’s relevance to a number of ongoing debates in normative and metanormative philosophy. I conclude by indicating some directions for further research. (shrink)

Recent years have seen the rise of fittingness-first views, which take fittingness to be the most basic normative feature, in terms of which other normative features can be explained. This paper poses a serious difficulty for the fittingness-first approach by showing that existing fittingness-first accounts cannot plausibly accommodate an important class of reasons: reasons not to believe a proposition. There are two kinds of reasons not to believe a proposition: considerations that are counterevidence; and considerations that (...) count against believing the proposition without indicating that it is false. I will argue that the fittingness- first accounts have trouble accommodating reasons of the latter kind. (*published with open access). (shrink)

According to the fitting-attitudes account of value, for X to be good is for it to be fitting to value X. But what is it for an attitude to be fitting? A popular recent view is that it is for there to be sufficient reason for the attitude. In this paper we argue that proponents of the fitting-attitudes account should reject this view and instead take fittingness as basic. In this way they avoid the notorious ‘wrong kind of reason’ (...) problem, and can offer attractive accounts of reasons and good reasoning in terms of fittingness. (shrink)

We often assess emotions as appropriate or inappropriate depending on certain evaluative aspects of the world. Often using the term ‘fittingness’ as equivalent to ‘appropriateness’, many philosophers of emotion take fittingness assessments of emotions to be a broadly representational matter. On this sort of view, an emotion is fitting or appropriate just in case there is a kind of representational match between the emotion and the object, a matching analogous to truth for belief. This view provides an account (...) of the relationship between emotion and value that many have found plausible. In this paper, I argue that the fittingness of emotions should not be understood in representational terms. Rather, as is common in the literature on fittingness, we should interpret the notion in normative terms. After providing four arguments against the representational interpretation, and for a normative interpretation, of emotional fittingness, I discuss two ways to develop the normative picture of emotional fittingness. I also clarify the relevant issues that will have to be tackled by philosophers of emotion in the future, issues which cannot be tackled without attending to action theory and the philosophy of normativity. (shrink)

New work in the foundations of ethics—extending the fitting attitudes analysis of value to yield a broader notion of normative fittingness as a (or perhaps even the) fundamental normative concept—provides us with the resources to clarify and renew the force of traditional character-based objections to consequentialism. According to these revamped fittingness objections, consequentialism is incompatible with plausible claims about which attitudes are truly fitting. If a theory’s implications regarding the fittingness facts are implausible, then this can be (...) taken to cast doubt on the truth of the theory. After clarifying the general structure of fittingness objections, and establishing how they can make character-based concerns relevant to our assessment of the truth of a moral theory like consequentialism, this chapter surveys some paradigmatic fittingness objections, showing how consequentialism can be defended against them. (shrink)

Sometimes, the fact that an attitude is fitting seems like a demand to have that attitude. But in other cases, the fact that an attitude is fitting seems more like a permission to have the attitude. I defend a proposal that can accommodate both of these appearances. I argue that there is a kind of emotionlessness, which I call apathy, that can be fitting or unfitting in just the same way that emotion can. I further argue that, in some cases, (...) it can be fitting to respond a single object either with emotion or with apathy. When both apathy and emotion are fitting options, the fittingness of the emotion is a permission-like status; failures to have the fitting emotion are not failures of fit. But when an emotion is fitting and apathy is unfitting, the fittingness of the emotion is a demand-like status; failures to have the emotion are failures of fit. (shrink)

The chapter introduces and characterizes the notion of fittingness. It charts the history of the relation and its relevance to contemporary debates in normative and metanormative philosophy and proceeds to survey issues to do with fittingness covered in the volume’s chapters, including the nature and epistemology of fittingness, the relations between fittingness and reasons, the normativity of fittingness, fittingness and value theory, and the role of fittingness in theorizing about responsibility. The chapter concludes (...) with a brief discussion of issues to do with fittingness that aren’t covered extensively by the volume’s chapters in order to indicate avenues for further research. (shrink)

Conor McHugh and Jonathan Way have defended a view of good reasoning according to which good reasoning is explained in terms of the preservation of fittingness. I argue that their Fittingness View is incorrect. Not all fittingness-preserving transitions in thought are instances of good reasoning.

This note explores how ideal subjectivism in metanormative theory can help solve two important problems for Fitting Attitude analyses of value. The wrong-kind-of-reason problem is that there may be sufficient reason for attitude Y even if the object is not Y-able. The many-kinds-of-fittingness problem is that the same attitude can be fitting in many ways. Ideal subjectivism addresses both by maintaining that an attitude is W-ly fitting if and only if endorsed by any W-ly ideal subject. A subject is (...) W-ly ideal when the most robust way of avoiding W-type practical problems is deferring to her endorsement. (shrink)

Philosophers interested in the fitting attitude analysis of final value have devoted a great deal of attention to the wrong kind of reasons problem. This paper offers an example of the reverse difficulty, the wrong kind of value problem. This problem creates deeper challenges for the fitting attitude analysis and provides independent grounds for rejecting it, or at least for doubting seriously its correctness.

A restrictive view of self-control identifies exercises of self-control with synchronic intrapsychic processes, and pictures diachronic and externally-scaffolded strategies not as proper instances of self-control, but as clever ways of avoiding the need to exercise that ability. In turn, defenders of an inclusive view of self-control typically argue that we should construe self-control as more than effortful inhibition, and that, on grounds of functional equivalence, all these diverse strategies might be properly described as instances of self-control. In this paper, (...) I take a fresh look at this debate by focusing on cases of addiction. I argue that addicted agents face a paradigmatic sort of self-control challenge, which makes addiction an important test case for theories of self-control. And I discuss evidence that highlights both the unreliability of synchronic intrapsychic strategies and the crucial role that is played by diachronic and externally-scaffolded strategies in successful attempts at achieving abstinence by addicted individuals. Abstaining addicts are a paradigmatic case of agents who successfully exercise self-control, and they mostly do so by relying on diachronic and externally-scaffolded strategies. This, I argue, lends further support to an inclusive view of self-control. (shrink)

In this paper, I discuss whether there are genuinely *diachronic* constraints of practical rationality, that is, pressures on combinations of practical attitudes over time, which are not reducible to mere synchronic rational pressures. Michael Bratman has recently argued that there is at least one such diachronic rational constraint that governs the stability of intentions over time. *Pace* Bratman, I argue that there are no genuinely diachronic constraints on intentions that meet the stringent desiderata set by him. But (...) I show that there are at least two synchronic rational constraints with distinctive and important, although only indirect, diachronic dimensions. Neither of them, however, supports the practical conservatism in the face of normative underdetermination that, according to Bratman, is part and parcel of the diachronic rationality of intention stability. (shrink)

In this paper I investigate whether there are genuine and irreducible pressures of diachronic rationality grounded on the structure of the subject rather than on substantive considerations, such as pragmatic ones. I argue that structural pressures of diachronic rationality have a limited scope. The most important pressure only tells against arbitrary interference with the mechanisms for the retention of attitudes over time. I then argue that in the practical case, a substantial account in terms of the agent's temporal (...) identity appears more promising than a purely structural one, but in the end it still leaves many questions about diachronic practical rationality underdetermined. (shrink)

This paper defends three theses on the normativity of the suspension of judgment. First, even if beliefs have to fit the truth and disbelief the false, suspension can still have satisfiable fittingness conditions. Second, combining this view with specific theses on the link between fittingness and normative reasons in favour of attitudes commits one to the existence of reasons to suspend judgement, which are neither reasons to believe nor reasons to disbelieve. These independent reasons, in turn, generate a (...) form of epistemic permissivism. Finally, I argue that there are different routes to derive this commitment to independent reasons for suspending judgement. Not only fittingness-centred approaches to epistemic normativity but also many analyses in terms of reasons are committed to this form of epistemic permissivism. (shrink)

It is often argued that future-directed decisions are effective at shaping our future conduct because they give rise, at the time of action, to a decisive reason to act as originally decided. In this paper, I argue that standard accounts of decision-based reasons are unsatisfactory. For they focus either on tie-breaking scenarios or cases of self-directed distal manipulation. I argue that future-directed decisions are better understood as tools for the non-manipulative, intrapersonal division of deliberative labor over time. A future-directed decision (...) to ϕ gives rise to a defeasible exclusionary reason to ϕ. This reason is grounded on the default authority that is normally granted to one’s prior self as an “expert” deliberator. I argue that this kind of exclusionary reason is the only one that can account for the effectiveness of future-directed decisions at shaping our diachronic agency without violating our autonomy over time. (shrink)

Many philosophers of emotion, whether perceptual or cognitive theorists, have claimed that emotions represent evaluative properties. This is often supported by an appeal to the fittingness of emotion: that emotions can be fitting shows they represent evaluative properties. In this paper, however, I argue that this inference is much too fast. In fact, no aspect of the rational assessment of emotion directly supports the claim that emotions represent evaluative properties. This inference can, however, be matured into an inference to (...) the best explanation. But this requires coming to terms with a significant emerging rival, the attitudinal theory of emotion. In this paper, I show how this can be accomplished and the inference from fittingness to content saved. (shrink)

This book has two main aims. First, it develops and defends a constitutive account of normative reasons as premises of good reasoning. This account says, roughly, that to be a normative reason for a response (such as a belief or intention) is to be premise of good reasoning, from fitting responses, to that response. Second, building on the account of reasons, it develops and defends a fittingness-first account of the structure of the normative domain. This account says that there (...) is a single normative property, fittingness, which is normatively basic, and on which all other normative properties depend. On this view, reasons, oughts, value, and other normative phenomena all ultimately depend on fittingness. The account of normative reasons is a part of this general view of the normative domain. The book begins, in chapter 1, by motivating the account of reasons as premises of good reasoning. Chapter 2 argues that good reasoning is, roughly, reasoning that preserves fittingness. Chapter 3 addresses the question of what fittingness is. Chapter 4 defends constitutive accounts of evaluative properties, like goodness, in terms of fitting attitudes. Chapters 5 and 6 shows how the view provides an attractive account of how reasons determine the deontic status of a response – whether you ought or may so respond. Chapter 7 addresses some challenges concerning certain reasons for belief, the relationship between reasons for action and reasons for intention, and reasons for emotion. (shrink)

Hitchcock advances a diachronic Dutch Book argument (DDB) for a 1/3 answer to the Sleeping Beauty problem. Bradley and Leitgeb argue that Hitchcock’s DDB argument fails. We demonstrate the following: (a) Bradley and Leitgeb’s criticism of Hitchcock is unconvincing; (b) nonetheless, there are serious reasons to worry about the success of Hitchcock’s argument; (c) however, it is possible to construct a new DDB for 1/3 about which such worries cannot be raised.

We direct different attitudes towards states of affairs depending on where in time those states of affairs are located. Call this the type asymmetry. The type asymmetry appears fitting. For instance, it seems fitting to feel guilt or regret only about states of affairs that are past, and anticipation only of states of affairs that are future. It has been argued that the type asymmetry could only be fitting if there are tensed facts, and hence that since it is fitting, (...) there are tensed facts. In this paper I argue that tensed facts are not necessary to ground the fittingness of the type asymmetry, and thus we have no reason, arising from the fittingness of the asymmetry, to posit such facts. I also argue for a stronger conclusion: even if these facts obtain they are no part of what grounds the fittingness of the type asymmetry. These facts are explanatorily redundant. (shrink)

This paper develops the Diachronic Self-Making View, the view that we are the non-accidentally best candidate referents of our ‘I’-beliefs. A formulation and defence of DSV is followed by an overview of its treatment of familiar puzzle cases about personal identity. The rest of the paper focuses on a challenge to DSV, the Puzzle of Inconstant ‘I’-beliefs: the view appears to force on us inconsistent verdicts about personal identity in cases that we would naturally describe as changes in one’s (...) de se beliefs. To solve this problem, the paper defends the possibility of overlapping people, and addresses a number of objections to this idea. (shrink)

A handful of well-known arguments (the 'diachronic Dutch book arguments') rely upon theorems establishing that, in certain circumstances, you are immune from sure monetary loss (you are not 'diachronically Dutch bookable') if and only if you adopt the strategy of conditionalizing (or Jeffrey conditionalizing) on whatever evidence you happen to receive. These theorems require non-trivial assumptions about which evidence you might acquire---in the case of conditionalization, the assumption is that, if you might learn that e, then it is not (...) the case that you might learn something else that is consistent with e. These assumptions may not be relaxed. When they are, not only will non-(Jeffrey) conditionalizers be immune from diachronic Dutch bookability, but (Jeffrey) conditionalizers will themselves be diachronically Dutch bookable. I argue: 1) that there are epistemic situations in which these assumptions are violated; 2) that this reveals a conflict between the premise that susceptibility to sure monetary loss is irrational, on the one hand, and the view that rational belief revision is a function of your prior beliefs and the acquired evidence alone, on the other; and 3) that this inconsistency demonstrates that diachronic Dutch book arguments for (Jeffrey) conditionalization are invalid. (shrink)

Mechanistic approaches are very common in the causal interpretation of biological and neuroscientific experimental work in today’s philosophy of science. In the mechanistic literature a strict distinction is often made between causal relations and constitutive relations, where the latter cannot be causal. One of the typical reasons for this strict distinction is that constitutive relations are supposedly synchronic whereas most if not all causal relations are diachronic. This strict distinction gives rise to a number of problems, however. Our end (...) goal in this paper is to argue that it should be given up, at least in the context of the biological and the psychological sciences. To that effect, we argue that constitutive relations in this context are diachronic, thus undermining the aforementioned reason. We offer two cases from scientific practice in which constitutive relations are regarded as both diachronic and causally efficacious, review three existing ways of dealing with the apparent diachronic nature of interlevel relations in mechanisms and propose a new account of diachronic, causal constitutive relevance. (shrink)

Conor McHugh and Jonathan Way argue that we should put fittingness rather than reasons first because we can provide an account of the evaluative in terms of the normative only if we put fittingness rather than reasons first. I argue that it is no more difficult to provide an account of the evaluative in terms of the normative if we put reasons rather than fittingness first.

This is an essay in the Bayesian theory of how opinions should be revised over time. It begins with a discussion of the principle that van Fraassen has dubbed "Reflection". This principle is not a requirement of rationality; a diachronic Dutch argument, that purports to show the contrary, is fallacious. But under suitable conditions, it is irrational to actually implement shifts in probability that violate Reflection. Conditionalization and probability kinematics are special cases of the principle not to implement shifts (...) that violate Reflection; hence these principles are also requirements of rationality under suitable conditions, though not universal requirements of rationality. (shrink)

This paper explores the diachronic development of the English adverb again. A compositional semantic analysis of its grammar at various stages is provided. It is argued that this analysis must consist of a staging of first a lexical and then a structural change, in order to adequately model the sequence of individual developmental steps observed in the historical corpus data, and that it provides an insight into pathways of semantic change in general.

This chapter discusses the structure of our temporally extended agency. We do not have the power to act directly at a distance, so any of our temporally extended projects must be sustained over its temporal unfolding by momentary actions. We need both the capacity to organize these momentary steps in light of a synoptic overview of the extended activity as a whole and to sustain our motivation to continue to pursue the extended activity. Hence, the distinctive mode in which we (...) act over time is that of ’planning agency,’ which requires a form of temporal identification that goes beyond mere psychological continuity. I then discuss the differences in internal structure between merely continuous and integrated activities, and between telic and atelic ones. I provide a taxonomy of the different kinds of temporal goods and values and how these structures might bear on the risk of crisis of meaning in our temporal existence. I then touch briefly on the issue of how our mortality might make a difference to the structure of what we find valuable and how it relates to the temporal features of our agency. In the closing section, I discuss the effects of the moving temporal location of the agent (with her local executive powers) relative to her extended pursuits, including the asymmetries generated by the distinction between past and future stages of the activity and the moving horizon of what the agent can anticipate and (indirectly) control. (shrink)

As diachronic agents, we deliberate and decide in the present to perform future courses of action. Such future‐directed decisions normally enjoy a distinctive species of rational authority over subsequent thought and action. But what is the nature of this authority, and what underwrites its normative force? In this paper, I argue that our answer to this question must begin by situating future‐directed deciding within an intrapersonal model of cross‐temporal influence. The role of future‐directed deciding (and intending), then, is not (...) to generate a novel decision‐based reason for action, but instead to preserve a certain positive normative status over time. I develop an entitlement approach to decisional authority, according to which an agent who rationally decides to ϕ enjoys a practical entitlement, rather than a reason‐based practical justification, to ϕ at the appointed time. This entitlement is underwritten, I argue, by the warrant‐preserving nature of the sequence taking an agent from deliberation to subsequent action. (shrink)

In this short commentary, I will first show why Kiverstein & Kirchhoff's (this volume) analysis of the CC-fallacy is inadequate in an important way and show why their strategy for avoiding the CC-fallacy based on diachronic constitution is problematic. Second, I will reply to their criticism of the mechanistic account of constitution.

Composition, persistence, vagueness, and more constitute an interconnected network of problems. My criticism of Hud Hudson's provocative claims made in a recent paper (Hudson 2002) was focused almost exclusively on the issue of diachronic composition (Balashov 2003). Hudson's response (2003) has highlighted the dangers of such isolationism. But I want to hold to my strategy to the end. Part of the reason is to evade the appalling responsibility of presenting a full-blown theory of all the above phenomena; I must (...) confess that I do not have such a theory. At the same time, I contend that diachronic composition can be profitably carved out from the medley of the surrounding issues more or less at the joints provided by nature itself. And I do subscribe to some sort of realism about the joints of nature. (shrink)

Diachronic uncertainty, uncertainty about where an agent falls in time, poses interesting conceptual difficulties. Although the agent is uncertain about where she falls in time, this uncertainty can only obtain at a particular moment in time. We resolve this conceptual tension by providing a transformation from models with diachronic uncertainty relations into “equivalent” models with only synchronic uncertainty relations. The former are interpreted as capturing the causal structure of a situation, while the latter are interpreted as capturing its (...) epistemic structure. The models are equivalent in the sense that agents pass through the same information sets in the same order, In this paper, we investigate how such a transformation may be used to define an appropriate notion of equivalence, which we call epistemic equivalence. Although our project is motivated by problems which have arisen in a variety of disciplines, especially philosophy and game theory, our formal development takes place within the general and flexible framework provided by epistemic temporal logic. (shrink)

This book has two main aims. First, it develops and defends a constitutive account of normative reasons as premises of good reasoning. This account says, roughly, that to be a normative reason for a response (such as a belief or intention) is to be premise of good reasoning, from fitting responses, to that response. Second, building on the account of reasons, it develops and defends a fittingness-first account of the structure of the normative domain. This account says that there (...) is a single normative property, fittingness, which is normatively basic, and on which all other normative properties depend. On this view, reasons, oughts, value, and other normative phenomena all ultimately depend on fittingness. The account of normative reasons is a part of this general view of the normative domain. The book begins, in Chapter 1, by motivating the account of reasons as premises of good reasoning. Chapter 2 argues that good reasoning is, roughly, reasoning that preserves fittingness. Chapter 3 addresses the question of what fittingness is. Chapter 4 defends constitutive accounts of evaluative properties, like goodness, in terms of fitting attitudes. Chapters 5 and 6 shows how the view provides an attractive account of how reasons determine the deontic status of a response—whether you ought or may so respond. Chapter 7 addresses some challenges concerning certain reasons for belief, the relationship between reasons for action and reasons for intention, and reasons for emotion. (shrink)

The Reflection Principle can be defended with a Diachronic Dutch Book Argument (DBA), but it is also defeated by numerous compelling counter-examples. It seems then that Diachronic DBAs can lead us astray. Should we reject them en masse—including Lewis’s Diachronic DBA for Conditionalization? Rachael Briggs’s “suppositional test” is supposed to differentiate between Diachronic DBAs that we can safely ignore (including the DBA for Reflection) and Diachronic DBAs that we should find compelling (including the DBA for (...) Conditionalization). I argue that Brigg’s suppositional test is wrong: it sets the bar for coherence too high and places certain cases of self-doubt on the wrong side of the divide. Given that the suppositional test is unsatisfactory, we are left without any justification for discriminating between Diachronic DBAs and ought to reject them all—including the DBA for Conditionalization. (shrink)

This paper explicates two notions of emergencewhich are based on two ways of distinguishinglevels of properties for dynamical systems.Once the levels are defined, the strategies ofcharacterizing the relation of higher level to lower levelproperties as diachronic and synchronic emergenceare the same. In each case, the higher level properties aresaid to be emergent if they are novel or irreducible with respect to the lower level properties. Novelty andirreducibility are given precise meanings in terms of the effectsthat the change of a (...) bifurcation or perturbation parameterin the system has. (The same strategy can be applied to otherways of separating levels of properties, like themicro/macro distinction.)The notions of emergence developed here are notions of emergencein a weak sense: the higher level emergent properties wecapture are always structural properties (or are realized insuch properties), that is, they are defined in terms of the lowerlevel properties and their relations. Diachronic and synchronicemergent properties are distinctions within thecategory of structural properties. (shrink)

Diachronic emergence has recently been characterised as transformation. This aims to capture the thought that the entities that emerge are radically new or different. Transformation is hence closely linked with a central (but rarely raised) challenge for all emergentists: how to account for the identity and individuation of entities involved in emergence. With this challenge in view, I develop and probe four interpretations of transformation: addition, replacement, fusion, and transubstantiation. Of those, transubstantiation provides the most plausible response to the (...) challenge about identity. Accordingly, diachronic emergence is a transformative process whereby an individual passes from one primary kind to another. (shrink)

Bayesians standardly claim that there is rational pressure for agents’ credences to cohere across time because they face bad (epistemic or practical) consequences if they fail to diachronically cohere. But as David Christensen has pointed out, groups of individual agents also face bad consequences if they fail to interpersonally cohere, and there is no general rational pressure for one agent's credences to cohere with another’s. So it seems that standard Bayesian arguments may prove too much. Here, we agree with Christensen (...) that there is no general rational pressure to diachronically cohere, but we argue that there are particular cases in which there is rational pressure to diachronically cohere, as well as particular cases in which interpersonal probabilistic coherence is rationally required. More generally, we suggest that Bayesian arguments for coherence apply whenever a collection (of agents or time slices) has a shared dimension of value and an ability to coordinate their actions in a range of cases relevant to that value. Typically, this shared value and ability to coordinate is very strong across the time slices of one human being, and very weak across different human beings, but there are special cases where these can switch—i.e., some groups of humans will have as much reason for their beliefs to cohere across a particular range of cases as the time slices of one human usually do, but some time slices of a human will have as much freedom to differ in their beliefs from the others as the members of a group usually do. (shrink)

There are two different varieties of question concerning the unity of consciousness: questions about unity at a time, and unity over time. A recent trend in the debate about unity has been to attempt to provide a ‘generalized’ account that purports to solve both problems in the same way. This attempt can be seen in the accounts of Barry Dainton and Michael Tye. In this paper, I argue that there are crucial differences between unity over time and unity at a (...) time that make it impossible to provide a generalized account of unity. The source of these crucial differences is the phenomenon of the ‘continuity of consciousness’. I argue that accounts of unity over time have to provide an account of this continuity, and that there is no phenomenon analogous to continuity in the case of unity at a time. Attention to the continuity of consciousness reveals crucial structural differences between the two varieties of unity. These structural differences make it impossible to provide a generalized account of unity. I show that the problems faced by Dainton’s and Tye’s accounts in the light of the structural differences make their accounts of unity appear far less appealing than they might initially have looked. I conclude by noting that, in the light of the important differences between the two varieties of unity, it is a mistake to attempt to model accounts of unity over time on accounts of unity at a time. (shrink)

The question of diachronic coherence, coherence of degrees of belief across time, is investigated within the context of Richard Jeffrey’s radical probabilism. Diachronic coherence is taken as fundamental, and coherence results for degrees of belief at a single time, such as additivity, are recovered only with additional assumptions. Additivity of probabilities of probabilities is seen to be less problematic than additivity of first-order probabilities. Without any assumed model of belief change, diachronic coherence applied to higher-order degrees of (...) belief yields the martingale property. (shrink)

Our aim in this article is to show how the theory of conceptual spaces can be useful in describing diachronic changes to conceptual frameworks, and thus useful in understanding conceptual change in the empirical sciences. We also compare the conceptual space approach to Moulines’s typology of intertheoretical relations in the structuralist tradition. Unlike structuralist reconstructions, those based on conceptual spaces yield a natural way of modeling the changes of a conceptual framework, including noncumulative changes, by tracing the changes to (...) the dimensions that reconstitute a conceptual framework. As a consequence, the incommensurability of empirical theories need not be viewed as a matter of conceptual representation. (shrink)

Medieval accounts of diachronically unified consciousness have been overlooked by contemporary readers, because medieval thinkers have a unique and unexpected way of setting up the problem. This paper examines the approach to diachronically unified consciousness that is found in Augustine’s and Aquinas’s treatments of memory. For Augustine, although the mind is “distended” by time, it remains resilient, stretching across disparate moments to unify past, present, and future in a single personal present. Despite deceptively different phrasing, Aquinas develops a remarkably similar (...) view when, in order to accommodate Aristotle’s view of memory to Augustine’s, he insists that an implicit self-awareness “time-stamps” all intellectual acts. According to their shared approach, diachronic unified consciousness is the result of the curious way in which the mind is both drawn into and transcends the temporal succession of its own acts. (shrink)

The paper introduces a new problem for fallibilist and infallibilist epistemologies – the diachronic threshold problem. As the name suggests, this is a problem similar to the well–known threshold problem for fallibilism. The new problem affects both fallibilism and infallibilism, however. The paper argues that anyone who worries about the well known problem for fallibilism should also worry about this new, diachronic version of the problem.