This paper presents an argument for the Principle of Sufficient Reason, the PSR, the principle according to which each thing that exists has an explanation. I begin with several widespread and extremely plausible arguments that I call explicability arguments in which a certain situation is rejected precisely because it would be arbitrary. Building on these plausible cases, I construct a series of explicability arguments that culminates in an explicability argument concerning existence itself. This argument amounts to the claim that the (...) PSR is true. The plausibility of the initial cases in the series provides the basis of an argument for the PSR, an argument that can be rebutted only by drawing a line between the plausible early cases in the series and the apparently unacceptable later cases. I argue that no principled reason for drawing this line has been found and that one cannot draw an unprincipled or arbitrary line without begging the question. The paper concludes that, therefore, this defense of the PSR remains unrebutted and that we have a powerful, new reason to embrace the PSR. (shrink)

It is argued first, that Spinoza's Principle of Sufficient Reason (PSR) is best seen as an auxiliary premise and not as an axiom of the Ethics; second, that Spinoza held the PSR to be a self-evident truth that indicates a necessary condition for clearly and distinctly representing the existence or non-existence of a thing; and third, that this interpretation of Spinoza's PSR explains the near absence of the PSR within the demonstrations of the Ethics as well as the importance of (...) the principle in Spinoza's thought. (shrink)

The Principle of Sufficient Reason —the principle that everything has a reason—plays a central role in Leibniz’s philosophical system. It is rather difficult, however, to determine what Leibniz’s attitude towards the modal status of the PSR is. The prevailing view is that Leibniz takes the PSR to be true necessarily. This paper develops a novel interpretation and argues that Leibniz’s PSR is a contingent principle. It also discusses whether a merely contingent PSR can do the metaphysical heavy lifting that Leibniz (...) aims for. The paper shows that, despite appearance to the contrary, this is possible. In a nutshell, the argument is that the only possible PSR violation Leibniz allows for is God’s creation of a suboptimal world; there is no Leibnizian possible world, though, which intrinsically violates the PSR. Despite its contingency, then, Leibniz’s PSR is modally robust enough to serve as a foundational principle of his metaphysics. (shrink)

Adhering to the traditional concept of omniscience lands Gale in the incoherence Grim’s Cantorian arguments reveal in talk of “all propositions.” By constructing variants and extensions of Grim’s arguments, I explain why various ways out of the incoherence are unacceptable, why theists would do better to adopt a certain revisionary concept of omniscience, and why the Cantorian troubles are so deep as to be troubles as well for Gale’s Weak PSR. I conclude with some brief reflections on method, suggesting that (...) we pursue the full implications of Gale’s own revisionary remarks and replace his method of analytic argumentation with non-analytic revisionary theory-construction. (shrink)

Adhering to the traditional concept of omniscience lands Gale in the incoherence Grim’s Cantorian arguments reveal in talk of “all propositions.” By constructing variants and extensions of Grim’s arguments, I explain why various ways out of the incoherence are unacceptable, why theists would do better to adopt a certain revisionary concept of omniscience, and why the Cantorian troubles are so deep as to be troubles as well for Gale’s Weak PSR. I conclude with some brief reflections on method, suggesting that (...) we pursue the full implications of Gale’s own revisionary remarks and replace his method of analytic argumentation with non-analytic revisionary theory-construction. (shrink)

Accurate wind speed forecasting is an effective way to improve the safety and stability of power grid. A novel hybrid model based on twice decomposition, phase space reconstruction, and an improved multiverse optimizer-extreme learning machine is proposed to enhance the performance of short-term wind speed forecasting in this paper. In consideration of the nonstationarity of the wind speed signal, a twice decomposition based on improved complete ensemble empirical mode decomposition with adaptive noise, fuzzy entropy, and variational mode decomposition is proposed (...) to reduce the nonstationarity of the original signal firstly. Then the PSR based on C-C method is employed to reconstitute the decomposed signal as the input of the prediction model. Lastly, an improved multiverse optimizer is proposed to improve the stability and efficiency of ELM which is used as prediction model. Furthermore, two experiments are designed to verify the performance of the proposed method; the results indicate that the wind speed forecasting with twice decomposition of original wind speed signal is better than other once-decomposition methods and much better than forecasting without decomposition; the C-C-PSR method can determine the input dimension of ELM and improve the prediction accuracy of ELM; the IMVO has improved the stability of ELM, and the optimization efficiency is better than other comparison optimization methods. The results show that the proposed hybrid approach is a useful tool for short-term wind speed forecasting. (shrink)

Combinations of molecules, of biological individuals, or of chemical processes can produce effects that are not simply attributable to the constituents. Such non-redundant causality warrants recognition of those coherences as ontologically significant whenever that efficacy is relevant. With respect to such interaction, the effective coherence is more real than are the components. This ontological view is a variety of structural realism and is also a kind of process philosophy. The designation ‘process structural realism’ (PSR) seems appropriate.

One conception of the Principle of Sufficient Reason maintains that every fact is metaphysically explained. There are different ways to challenge this version of the PSR; one type of challenge involves pinpointing a specific set of facts that resist metaphysical explanation. Certain identity and distinctness facts seem to constitute such a set. For example, we can imagine a scenario in which we have two qualitatively identical spheres, Castor and Pollux. Castor is distinct from Pollux but it is unclear what could (...) metaphysically explain this distinctness fact. In this paper, I argue that we should not treat identity and distinctness facts as metaphysically fundamental. As such, identity and distinctness facts do not challenge the PSR. We can metaphysically explain them. (shrink)

In China, live streaming has grown rapidly in recent years, with gift-giving, a unique business model in live streaming, driving the development of many industries. This article explores the association between gift-giving behavior in game live streaming and viewers' live streaming experience. Specifically, this study aims to explore the correlation between Para-social Relationships, Social Presence, and gift-giving in the context of China. Based on the survey and interview of the viewer on Douyu, a Chinese live streaming platform, this study found (...) that there is only a weak to a medium correlation between para-social relationships and viewers' gift-giving behavior. The correlation between social presence and gift-giving was even weaker. Although the conclusion of this study may be affected by the sample size limitation, it can still provide a reference for the current research on gift-giving on Chinese live streaming platforms. (shrink)

Many philosophers have appealed to the PSR in arguments for a being that exists a se, a being whose explanation is in itself. But what does it mean, exactly, for something to have its explanation ‘in itself’? Contemporary philosophers have said next to nothing about this, relying instead on phrases plucked from the accounts of various historical figures. In this article, I analyse five such accounts – those of Anselm, Aquinas, Descartes, Spinoza, and Leibniz – and argue that none are (...) satisfactory. Should we abandon or restrict the PSR, then? I think that would be hasty, for many reasons. I therefore consider the prospects of explaining everything, including God, given the constraints of certain features of good explanations, and conclude with several observations about future approaches. (shrink)

Amijee ("Inquiry and Metaphysical Rationalism") argues that as long as we have not yet discovered that any fact is ungrounded, we ought to be committed to a version of the principle of sufficient reason (PSR), according to which every fact is grounded. In this note I present Amijee’s argument, rebut it, and diagnose where it fails. In a nutshell, the issue with Amijee's argument is that in general, rationally searching for something/seeking something/trying to achieve something does not require believing that (...) one is able to reach one's goal. (shrink)

Shamik Dasgupta (2016) proposes to tame the Principle of Sufficient Reason (PSR) to apply to only non-autonomous facts, which are facts that are apt for explanation. Call this strategy to tame the PSR the taming strategy. In a recent paper, Della Rocca (2020a) argues that proponents of the taming strategy, in attempting to formulate a restricted version of the PSR, nevertheless find themselves committed to endorsing a form of radical monism, which, in turn, leads right back to an untamed-PSR. Suppose, (...) for the sake of argument, that Della Rocca is right. My question is this: Is there reason to believe the principle of sufficient reason (in its untamed version)? In this paper, I argue that it is impossible for there to be a reason to believe the untamed-PSR. (shrink)

This chapter contains sections titled: Introduction The PSR Nonlocal CPs Toward a First Cause The Gap Problem Conclusions and Further Research References.

: The question of Kant’s relation to Spinozist thought has been virtually ignored over the years. I analyze Kant’s pre-critical ‘possibility-proof’ of God’s existence, elaborated in the Beweisgrund, as well as the echoes that this proof has in the first Critique, in beginning to uncover the connection between Kant’s thought and Spinoza’s. Kant’s espousal of the Principle of Sufficient Reason [PSR] for the analysis of modality during the pre-critical period committed him, I argue, to Spinozist substance monism. Much textual evidence (...) suggests that he was aware of this commitment. However, by transforming the PSR into a regulative principle the critical Kant has transformed his pre-critical proof into a regulative ideal. He is thereby committed, I argue, to regulative Spinozism. (shrink)

ABSTRACTMost of Spinoza’s arguments for God’s existence do not rely on any special feature of God, but instead on merely general features of substance. This raises the following worry: those arguments prove the existence of non-divine substances just as much as they prove God’s existence, and yet there is not enough room in Spinoza’s system for all these substances. I argue that Spinoza attempts to solve this problem by using a principle of plenitude to rule out the existence of other (...) substances and that the principle cannot be derived from the PSR, as many claim.Abbreviation: PSR: Principle of Sufficient Reason. (shrink)

Alexander Pruss’s Principle of Sufficient Reason states that every contingent true proposition has an explanation. Pruss thinks that he can plausibly maintain both his PSR and his account of libertarian free will. This is because his libertarianism has it that contingent true propositions reporting free choices are self-explanatory. But I don’t think Pruss can plausibly maintain both his PSR and libertarianism without a rift occurring in one or the other. Similar to the old luck/randomness objection, I contend that Pruss’s libertarianism (...) is susceptible to what I call “the inexplicability objection”, which attempts to show that agents’ free choices involve contingent brute facts. Pruss may be able to partially explain a proposition such that Jones freely chose A for reason R, but he cannot adequately explain a contrastive proposition such as that Jones freely chose A for R rather than B for R*. The result is that either PSR is too explanatorily permissive for libertarianism, or libertarianism is too explanatorily impermissive to satisfy PSR. After considering what I take to be Pruss’s best response to the inexplicability objection, I conclude that his attempt to reconcile PSR and libertarianism is unsuccessful. (shrink)

There is a ubiquitous claim in the grounding literature that metaphysical foundationalism violates the principle of sufficient reason (PSR) in virtue of positing a level of ungrounded facts. I argue that foundationalists can accept the PSR if they are willing to replace funda- mentality as independence with completeness and deny that ground is a strict partial order. The upshot is that the PSR can be compatible with both metaphysical foundation- alism and metaphysical infinitism, and so presupposing this fixed explanatory demand (...) need not beg the question in favour of either view. (shrink)

Pragmatic Scientific Realism (PSR) urges us to take up the realist aim or the goal of truth although we have good reason to think that the goal can neither be attained nor approximated. While Newton-Smith thinks that pursuing what we know we cannot achieve is clearly irrational, Rescher disagrees and contends that pursuing an unreachable goal can be rational on pragmatic grounds—if in pursuing the unreachable goal one can get indirect benefits. I have blocked this attempt at providing a pragmatic (...) justification for the realist aim of PSR on precisely the same pragmatic grounds—since there is a competing alternative to PSR, and the alternative can provide whatever indirect benefits PSR can offer while being less risky than it is, prudential reasoning favours the alternative to PSR. This undermines the pragmatic case for the realist aim of science since the instrumentalist alternative does not aim at the truth. (shrink)

This paper explores a PSR-connected trail leading from theistic idealism to a form of substance monism. In particular, I argue that the same style of argument available for a Leibnizian form of metaphysical idealism actually leads beyond idealism to something closer to Spinozistic monism. This path begins with a set of theological commitments about the nature and perfection of God that were widely shared among leading early modern philosophers. From these commitments, there arises an interesting case for metaphysical idealism, roughly (...) the thesis that only minds and mind-dependent states actually exist. However, I contend, that same theistic reasoning also leads to an idealist form of substance monism, the view that God is the only actual substance and that almost everything else is merely an intentional object in God’s mind. (shrink)

Spinoza ' s understanding and understanding Spinoza -- Spinoza ' s understanding -- Understanding Spinoza -- The metaphysics of substance -- Descartes and substance -- Spinoza contra Descartes on substance -- Modes -- Necessitarianism -- The purpose of it all -- The human mind -- Parallelism and representation -- Essence and representation -- Parallelism and mind - body identity -- The idea of the human body -- The pancreas problem, the pan problem, and panpsychism -- Nothing but representation -- Representation, (...) will, and belief -- Skepticism -- Psychology : striving and self - preservation -- Conatus -- Desire, joy, and sadness -- Love, hate, and all that -- The ethics of the ethics -- The good notion of the good -- The right notion of the right -- Knowledge and morality -- Freedom and morality -- Helping others -- Lies and degrees of freedom -- The state, religion, and scripture -- Rights and power -- Religion and the state -- Scripture -- Prophecy and the truth of the Bible -- From PSR to eternity -- The aftermath of Spinoza -- Leibniz -- Bayle and Hume -- The pantheism controversy -- Hegel -- Nietzsche -- Prospects of spinozistic rationalism. (shrink)

The argument for modal collapse is partly responsible for the widespread rejection of the so-called Principle of Sufficient Reason in recent times. This paper discusses the PSR against the background of the recent debate about grounding and develops principled reasons for rejecting the argument from modal collapse.

Spinoza’s philosophy is bold and rich in challenges to our “common-sense intuitions”, and insofar as it provides powerful arguments to motivate these challenges, I believe that we cannot ask for more. Bold and well-argued philosophy has the indispensable virtue of being able to unsettle and try us, to move us to reconsider what seems natural and obvious, and possibly even to change our most basic beliefs. Indeed, for those who seek to test – rather than confirm - their old and (...) well-fortified intuitions, Spinoza is nothing short of a living spring. My deep support for rigorous, counter-intuitive philosophy notwithstanding, a considerable part of the current paper will be dedicated to an examination and critique of one of the boldest and most fascinating readings of Spinoza of the past few years. In his recent piece, “Rationalism Run Amok: Representation and the Reality of Emotions in Spinoza,” and in his outstanding new book, Michael Della Rocca suggests a strict identification of the relations of inherence, causation, and conception in Spinoza (Della Rocca develops this view partly in response to a position recently articulated by Don Garret). In order to see the striking implications of this claim, one need only realize that, according to Della Rocca, Spinoza holds that insofar as the sun is the (partial) cause of some states of the sunflower, the sunflower (partly) inheres in the sun. Furthermore, insofar as my great-great-grandparents caused me, I inhere in them (though we never co-existed at the same time). The mere oddity of Della Rocca’s claim will play only a limited role, if any, in my discussion below. Della Rocca provides important and interesting arguments to the effect that if we are to accept Spinoza’s radical version of the Principle of Sufficient Reason (henceforth, PSR), we should bite the bullet and accept the odd implications of Spinoza’s alleged view. While I have nothing but admiration for this willingness to read Spinoza in an allegedly consistent and uncompromising manner, I do think that Della Rocca’s argument that a strict endorsement of the PSR leads necessarily to the identification of the relations of inherence, causation and conception is wrong. I will argue that (1) Spinoza never endorsed this identity, and (2) that Della Rocca’s suggestion could not be considered as a legitimate reconstruction or friendly amendment to Spinoza’s system because it creates several severe and irresolvable problems in the system, and for that reason (and not because the threefold identity contravenes common sense) it should be rejected. In the rest of the paper I rely on my analysis of the relations of inherence, causation, and conception, and suggest a new interpretation of core issues in Spinoza’s metaphysics, and particularly of the conceived through and in another relations and the nature of the substance/modes opposition. Against Della Rocca’s claim that the bifurcation of efficient causation (into causation which is, and is not, accompanied by inherence) constitutes an illegitimate brute fact, I will argue that the bifurcation of causation in Spinoza is paralleled by a bifurcation of conception and that the two relations are grounded in the foundational bifurcation of existence into substance and modes. If we are to recognize the reality of modes in Spinoza, we must also acknowledge the bifurcations that result from the bifurcation of existence into substance and modes. (shrink)

Peter van Inwagen presented a powerful argument against the Principle of Sufficient Reason, which I henceforth abbreviate as ‘PSR’. For decades, the consensus was that this argument successfully refuted PSR. However, now a growing consensus holds that van Inwagen’s argument is fatally flawed, at least when ‘sufficient reason’ is understood in terms of ground, for on this understanding, an ineliminable premiss of van Inwagen’s argument is demonstrably false and cannot be repaired. I will argue that this growing consensus is mistaken (...) and that a powerful argument relevantly similar to van Inwagen’s should still concern us, even when we understand ‘sufficient reason’ in terms of ground. (shrink)

This chapter explores an objection to explanatory universalism, the doctrine that the principle of sufficient reason is true or everything has an explanation. This objection is a direct argument to the conclusion that the PSR yields the existence of an omni-explainer, i.e. something that explains everything. The objection crucially relies on the assumption that explanation is dissective in its explanandum place, and its conclusion conflicts with the irreflexivity of explanation. So the chapter considers two responses to the mentioned objection. The (...) first response consisting in restricting the irreflexivity of explanation is criticised in connection with topics in the metaphysics of grounding. The second response consisting in denying that explanation is dissective is vindicated. Finally, the chapter argues that a plausible revised version of the principle that explanation is dissective, the PSR, and the irreflexivity of explanation together yield a striking picture of our universe. (shrink)

blandior ratio : C, 34). I will first survey how extensive, albeit usually overlooked, is Leibniz’s concern with these “weaker” forms of reasoning, and how crucial they are for many of his practical and theoretical endeavors. I will then trace back this acute need of Leibniz´s brand of rationalism to the peculiar nature of the Principle of Sufficient Reason (PSR), as opposed to the other basic principle of his philosophy, the Principle of Contradiction (PC). I will present here only the (...) bare bones of the argument, in a sort of extended summary, omitting the textual support as well the references to the relevant secondary literature. (shrink)

Pharmaceutical sales representatives (PSRs) are one of the most frequently used drug information sources for physicians in both the United States and China. During face-to-face interactions, PSRs use various promotional strategies to impact the prescribing behavior. In the United States, PSRs provide physicians small gifts, free drug samples, and “sincere friendships”, whereas in China, they played an indispensable role in medical corruption over the past three decades. To cope with the undue influence of PSRs, both these countries have taken positive (...) but insufficient measures to eliminate the effect thus far. By comparing the strategies of American and Chinese PSRs, it was found that building a friendly personal relationship with physicians in a relatively closed private environment (such as physician’s office) is a key factor to exert an individualized influence on physicians, even in different social backgrounds and healthcare contexts. Therefore, this essay suggests that it is necessary to limit the establishment of personal relationships and maintain a more professional interaction to reduce the personalized psychological and emotional influences on physicians’ professional judgment. To achieve this goal, it is proposed to transfer the physician-PSR interaction to a professional public space as a supplement to current countermeasures and suggestions. The presence of others and the possibility of third party participation will stimulate more ethical and reputational concerns. It is hoped that the increased transparency of the interaction will promote participants to consider more professional norms and mitigate the undue influence of PSRs’ individualized strategies. (shrink)

The purpose of this study is to understand the drivers of social responsibility in purchasing (PSR). This study replicated and extended the range of empirical application of the model developed by Carter and Jennings {Journal of Business Logistics 25(1), 145-186, 2004). Consequently, the present study contributes to the nomological validity of concept of PSR or Purchasing Social Responsibility. The method used is derived from the previous study by Carter and Jennings (Journal of Business Logistics 25(1), 145-186, 2004), and the present (...) study extends the application of that method to an Asian environment. The data were obtained from 197 respondents in Thailand. This sample was largely composed of purchasing and supply chain managers. Respondents were asked to indicate how different dimensions of corporate social responsibility (CSR) affect PSR. The findings of the present study suggest that all the six hypothesized paths have been substantiated. Individual values and people-oriented organizational culture are the most powerful predictors of PSR. This article contributes towards filling the gap in understanding the determinants of PSR in managing supply chains, particularly in an Asian context. (shrink)

The Principle of Sufficient Reason says that all contingent facts must have explanation. In this 2006 volume, which was the first on the topic in the English language in nearly half a century, Alexander Pruss examines the substantive philosophical issues raised by the Principle Reason. Discussing various forms of the PSR and selected historical episodes, from Parmenides, Leibnez, and Hume, Pruss defends the claim that every true contingent proposition must have an explanation against major objections, including Hume's imaginability argument and (...) Peter van Inwagen's argument that the PSR entails modal fatalism. Pruss also provides a number of positive arguments for the PSR, based on considerations as different as the metaphysics of existence, counterfactuals and modality, negative explanations, and the everyday applicability of the PSR. Moreover, Pruss shows how the PSR would advance the discussion in a number of disparate fields, including meta-ethics and the philosophy of mathematics. (shrink)

The term “principle of sufficient reason” (PSR) was coined by Leibniz, and he is often regarded as its paradigmatic proponent. But as Leibniz himself often insisted, he was by no means the first philosopher to appeal to the idea that everything must have a reason. Histories of the principle attribute versions of it to various ancient authors. A few of these studies include—or at least do not exclude—medieval philosophers; one finds the PSR in Abelard, another finds it in Aquinas. And (...) while Leibniz retains pride of place in these histories, Spinoza is sometimes said to precede him “in appreciating the importance of the Principle and placing it at the center of his philosophical system.” In this paper, the author argues that the same should be said of the Islamic philosopher Avicenna. Writing 600 years before his early modern counterparts, Avicenna routinely and consistently appeals to the PSR in generating his metaphysical system. The paper aims first to establish that Avicenna deserves a position of prominence in histories of the PSR, and then to consider how he addresses certain challenges to the PSR, especially the threat posed by necessitarianism. (shrink)

This paper locates a source of contingency for Leibniz in the fact that God can do otherwise, absolutely speaking. This interpretative line has been previously thought to be a dead-end because it appears inconsistent with Leibniz’s own conception of God, as the ens perfectissimum, or the most perfect being (Adams, 1994). This paper points out that the best argument on offer which seeks to demonstrate this inconsistency fails. The paper then argues that the supposition that God does otherwise implies for (...) Leibniz (at least) that God would not be praiseworthy, which is an absurd implication—or a violation of the principle of sufficient reason (PSR)—but that this is not, strictly speaking, an inconsistency—or a violation of the principle of contradiction (POC). While praiseworthiness is a perfection—and is compossible with God’s other perfections—and so God must instantiate it, this paper argues that, given the nature of praiseworthiness for Leibniz, it in fact makes sense to say that praiseworthiness is merely a contingent perfection of God. (shrink)

My aim in this paper is to explore the limits of a conception of metaphysical explanation based on the Principle of Sufficient Reason (PSR). For this purpose, I will focus on one of the alleged counter-intuitive consequences of an unrestricted application of the PSR, namely: Radical Monism. First, I will articulate such a conception of metaphysical explanation. Then, I will explain how is it that from a famous argument that rests on the PSR (i.e., Bradley’s regress) Radical Monism indeed seems (...) to follow. Right away, I will argue against the natural reaction that such argument triggers, namely: that we shall accept pluralism and relations as brute facts. Finally, I will sketch a qualified version of the PSR that allows us to avoid Radical Monism without compromising the essential content of the PSR. (shrink)

in his characteristically generous and searching discussion of my book, Spinoza, Daniel Garber rightly points out that I structure my interpretation of Spinoza’s system around the principle of sufficient reason. This is the principle that, as I and others sometimes put it, each fact has an explanation and is thus not brute, or the principle that each thing has an explanation. The ‘or’ will soon be important. Indeed, it might seem that I am too focused on the PSR—certainly I seem (...) that way to Garber1—for I seek to use the PSR to unlock any number of problems that interpreters of Spinoza have faced over the last three centuries. Garber does a great job of conveying the range of uses to which I put the PSR.. (shrink)

It can be shown by means of a paradox that, given the Principle of Sufficient Reason, there is no conjunction of all contingent truths. The question is, or ought to be, how to interpret that result: _Quid sibi velit?_ A celebrated argument against PSR due to Peter van Inwagen and Jonathan Bennett in effect interprets the result to mean that PSR entails that there are no contingent truths. But reflection on parallels in philosophy of mathematics shows it can equally be (...) interpreted either as a proof that there are "too many" contingent truths to combine in a single conjunction or as a proof that the concept _contingent truth_ is indefinitely extensible and there is no such thing as "all contingent truths." Either interpretation would reconcile PSR with contingent truth, but the natural rationales of those interpretations are at odds. This essay argues that the second interpretation is a more satisfactory explanation of why, if PSR is true, there should be no conjunction of all contingent truths. This sheds new light on the nature of the explanatory demand embedded in PSR and uncovers a number of surprising implications for the commitments of rationalism. (shrink)

In this article, I present a Leibnizian cosmological argument to the conclusion that either the totality of physical beings has a non-physical cause, or a necessary being exists. The crucial premise of the argument is a restricted version of the Principle of Sufficient Reason, namely the claim that every contingent physical phenomenon has a sufficient cause (PSR-P). I defend this principle by comparing it with a causal principle that is fundamental for physicalism, namely the Causal Closure of Physics, which says (...) that every physical effect has a sufficient physical cause (CC). I find that the evidence for Causal Closure is weaker than the evidence for PSR-P, which means that physicalists who take CC to be justified must concede that PSR-P is also justified, and to a higher degree. Since my Leibnizian cosmological argument succeeds if PSR-P is granted, I conclude that physicalists must either give up CC and thereby physicalism, or accept that a necessary being exists. (shrink)

This article provides insight into one form of audience involvement with celebrities: parasocial relationships. To address several shortcomings in PSR research – focus on TV, confusion between PSI and PSR, use of student samples, neglect of socio-demographic variables – a representative online survey was conducted with 1000 Flemish adults who indicated 382 celebrities as favorites. A new scale reveals that PSR contain two important elements: emotional connections and an analogy with social relationships. Confirming previous research, most favorite celebrities are male, (...) and cultural proximity is especially important for older respondents. In one combined model, respondents’ and celebrities’ characteristics are included as potential PSR predictors. This model nuances previous research and reveals that people who are male, older, more lowly-educated, and interested in celebrity news have stronger PSR. Further, stronger PSR are found for local and religious, political, sports, and music celebrities than for film celebrities. (shrink)

In this paper, I discuss Christian Wolff’s conception of motivating and normative reasons. My aim is to show that in the discussion of error cases, Wolff pursues a strategy that is strikingly similar to the strategy of contemporary defenders of nicht-psychologist accounts of motivating reasons. According to many nicht-psychologist views, motivating reasons are facts. My aim is to show that Wolff’s motivation in pursuing this strategy is very different. The point is that due to his commitment to the Principle of (...) Sufficient Reason, Wolff has to show that error cases are compatible with the PSR. The issue is worth discussing because it is not yet sufficiently explored what motivating reasons are, according to Wolff, and how they relate, in substance, to normative reasons. Methodologically, my approach can be characterized as one of “mutual illumination”: I think it is possible to highlight some crucial ambiguities of Wolff’s conception against the backdrop of the contemporary conception of motivating reasons, but also to question the importance and role of the ontological question of what motivating reasons are in contemporary discussions against the backdrop of Wolff’s position. (shrink)

Research on parasocial interactions and parasocial relationships refers back to a tradition of 50 years. However, research on both phenomena still suffers from overlapping definitions and resulting measurements that do not distinguish between PSI and PSR. The present study presents a post-exposure measurement tool that aims to measure PSI instead of PSR. It is derived from a theoretical model that specifically focuses on PSI. Psychometric analyses indicate the tool's high usability. It is capable of displaying both the intensity and the (...) dimensionality of PSI. It can be applied to measure both positive and negative PSI across all TV formats, without changing the item wording. In sum, the PSI-Process-Scales may offer a valuable alternative for researchers in the field, specifically if they want to assess parasocial processes that take place throughout TV exposure. (shrink)

Since their appearance in 1850, Pharmaceutical Sales Representatives (PSR) interactions with physicians have engendered intense emotional responses. The controversy has continued unabated since that time. Arguments in favor of the moral impermissibility of the PSR-physician relationship can be divided into four general categories; (1) influence, (2) patients pay but they do not choose, (3) violation of principlism, and (4) the erosion of the patient-physician relationship. None of the arguments that have thus far been proposed against the moral permissibility of these (...) interactions gives sufficient warrant to avoid them (or pursue them). It may be the case that PSR-physician interactions place the patientphysician relationship in jeopardy. This would constitute enough warrant, from a pragmatic perspective, to shun such relationships. However, no research supports this contention. A careful evaluation of the literature leaves one ambivalent at best. Keywords: pharmaceutical sales representatives, influence, conflict of interest CiteULike Connotea Del.icio.us What's this? (shrink)

Can one have one's rationalism and subjectivity too? That is, can one endorse a full-blooded Principle of Sufficient Reason (PSR)—the claim that everything is intelligible—and yet regard experience of the world from a finite, subjective perspective as a genuine feature of that world? Many have thought not. Viewing the world sub specie aeternitatis—as rationalism seems to require—leaves no room for the arbitrary privileging of a particular spatio-temporal location that is often the hallmark of subjectivity. When faced with this apparent dilemma (...) between subjectivity and the PSR, Spinoza—a good rationalist—simply rejects subjectivity, or so many have thought. Such an interpretation has thrived since Hegel, according .. (shrink)

The relation between leibniz's logical and his metaphysical views is the subject of much modern scholarship. Some commentators have argued that his metaphysics is based on his logic; others have taken the opposite position. However, Both sides pose the question in terms of 'priority'. On the contrary, I argue that it is likely that leibniz means the psr to play "both" a logical and a metaphysical role. The ambiguity of leibniz's psr indicates that he equates the metaphysical notion of causation (...) with the logical notion of deduction. The psr's ambiguity results less from any confusion on leibniz's part between the notions of cause and reason, Than from his desire to identify logic and metaphysics. That identity is achieved not by reducing one to the other, But by incorporating them on an equal basis into a single discipline. (shrink)

Metaphysical rationalism, the doctrine which affirms the Principle of Sufficient Reason (the PSR), is out of favor today. The best argument against it is that it appears to lead to necessitarianism, the claim that all truths are necessarily true. Whatever the intuitive appeal of the PSR, the intuitive appeal of the claim that things could have been otherwise is greater. This problem did not go unnoticed by the great metaphysical rationalists Spinoza and Leibniz. Spinoza’s response was to embrace necessitarianism. Leibniz’s (...) response was to argue that, despite appearances, rationalism does not lead to necessitarianism. This paper examines the debate between these two rationalists and concludes that Leibniz has persuasive grounds for his opinion. This has significant implications both for the plausibility of the PSR and for our understanding of modality. (shrink)

According to the Principle of Sufficient Reason (henceforth ‘PSR’), everything has an explanation or sufficient reason. This paper addresses three questions. First, how continuous is the contemporary notion of grounding with the notion of sufficient reason endorsed by Spinoza, Leibniz, and other rationalists? In particular, does a PSR formulated in terms of ground retain the intuitive pull and power of the PSR endorsed by the rationalists? Second, to what extent can the PSR avoid the formidable traditional objections levelled against it (...) if it is formulated in terms of ground? And finally, how might historical discussion of the PSR shed light on the contemporary notion of grounding? (shrink)

This article defends the principle of sufficient reason (PSR) from a simple and direct valid argument according to which PSR implies that there is a truth that explains every truth, namely an omni-explainer. Many proponents of PSR may be willing to bite the bullet and maintain that, if PSR is true, then there is an omni-explainer. I object to this strategy by defending the principle that explanation is irreflexive. Then I argue that proponents of PSR can resist the conclusion that (...) there is an omni-explainer by denying that explanation distributes over conjunction. In the final section, I consider a plausible revision of this assumption. I argue there that, given the revised assumption, PSR seems to yield a striking picture of the explanatory structure of the universe. I explain why the resulting model does not appear utterly implausible to me. (shrink)

Table of Contents: Chapter 1: Wolff and the Refinement of the Mathematical Method / Chapter 2: Wolff’s Emendation of Ontology / Chapter 3: Soul, World, and God: Wolff’s Metaphysics / Chapter 4: Women and the Wolffian Philosophy / Chapter 5: The Abuse of Philosophy: Pietism and the Metaphysics of Freedom / Chapter 6: Reason beyond Proof: Debating the Use and Limits of the PSR / Chapter 7: The Paradoxes of Sensation/ Chapter 8: G. F. Meier on the Fate of the (...) Soul / Chapter 9: Moses Mendelssohn and the Ghost of Spinoza . (shrink)

Several different Bayesian models of epistemic utilities (see, e. g., [37], [24], [40], [46]) have been used to explain why it is rational for scientists to perform experiments. In this paper, I argue that a model-suggested independently by Patrick Maher [40] and Graham Oddie [46]-that assigns epistemic utility to degrees of belief in hypotheses provides the most comprehensive explanation. This is because this proper scoring rule (PSR) model captures a wider range of scientifically acceptable attitudes toward epistemic risk than the (...) other Bayesian models that have been proposed. I also argue, however, that even the PSR model places unreasonably tight restrictions on a scientist's attitude toward epistemic risk. As a result, such Bayesian models of epistemic utilities fail as normative accounts-not just as descriptive accounts (see, e. g., [31], [14])-of scientific inquiry. (shrink)

The Principle of Sufficient Reason is very seldom, if ever, referred to in the works of whom we might think of as the eminent Asian metaphysicians. In spite of this, the big picture metaphysical views available in the thought of philosophers such as Nāgārjuna, Fazang and Nishida appear to share certain structural features with views more familiar to us from our own tradition; views that explicitly accept or reject the Principle of Sufficient Reason. Nāgārjuna looks to develop a kind of (...) metaphysical infinitism, Fazang an extreme form of coherentism, and Nishida a species of foundationalism. These three positions - infinitism, coherentism and foundationalism - are typically thought to exhaust the spread of possibilities by those working within the Western tradition. -/- In spite of their similarities to positions advanced within our own tradition, the cosmologies of many of the giants of Asian philosophy are characterised by their rather striking conclusions. Amongst such conclusions for Nāgārjuna is that everything is empty; for Fazang that everything is identical to everything else; and for Nishida that everything depends on absolute nothingness. If the Principle of Sufficient Reason is playing a role in the derivation of such striking conclusions, then it looks that there are more options regarding the metaphysical structure of the world available to us than our own tradition typically courts. If, on the other hand, these striking cosmological conclusions are arrived at without any consideration of sufficient reason, then there may well be ways of reasoning about the overarching structure of reality that are powerful but unfamiliar to Western thinking. In this contribution, I explore what, if any, role the PSR might be playing in the thought of Nāgārjuna , Fazang and Nishida, and what we might be able to learn from it. (shrink)

The early modern period was the natural historical habitat of the Principle of Sufficient Reason, i.e., the demand that everything must have a cause, or reason. It is in this period that the principle was explicitly articulated and named, and throughout the period we find numerous formulations and variants of the PSR and its closely related ‘ex nihilo nihil fit’ principle, which the early moderns inherited from medieval philosophy. Contemporary discussions of these principles were not restricted to philosophy. “Nothing will (...) come of nothing; speak again” old King Lear tells his daughter Cordelia at the beginning of Shakespeare’s celebrated tragedy, and in early modern science, conservation principles were the order of the day. Within philosophy, Malebranche stipulates that there cannot be an effect without a cause, and Berkeley motivates his idealism by an appeal to ‘ex nihilo nihil fit.’ Were we to try to provide an exhaustive survey the various formulations of the PSR in this period – including the weaker ones – we would be writing an encyclopedia. In fact, one wonders whether any early modern thinker was willing to accept a wholesale rejection of the PSR, i.e., a view which states that no fact requires an explanation. Moreover, the view that many – perhaps most – facts require an explanation seems to be tacitly assumed even by us today, in both our theoretical and colloquial discourse. For these reasons, this chapter will focus on two early modern philosophers who advocated very strong (i.e., virtually exceptionless) versions of the PSR: Benedict de Spinoza and G.W. Leibniz. Following a brief overview of Descartes’s restricted endorsement of the PSR, I will turn to discuss the central features of the PSR in the writings of Spinoza (§2) and those of Leibniz (§3). In the cases of each of these philosophers, we will examine carefully: (i) their main statements of the PSR, (ii) the scope they assign to the principle (i.e., what requires an explanation and what counts as an explanation), (iii) the modal strength they assign to the principle, (iv) the main implications they draw from the principle, (v) exceptions to the principle, and, finally, (vi) the justification of the principle. In §4, we will study a principle, complementing the PSR, namely, the assertion that everything and every fact must have an effect (or as Leibniz would put it: “nothing is sterile”). (shrink)