Reasons First

IF 2.8 1区 哲学 0 PHILOSOPHY PHILOSOPHICAL REVIEW Pub Date : 2023-07-01 DOI:10.1215/00318108-10469603
Eva Schmidt
{"title":"<i>Reasons First</i>","authors":"Eva Schmidt","doi":"10.1215/00318108-10469603","DOIUrl":null,"url":null,"abstract":"Mark Schroeder’s latest book delves deeper into the topic of normativity and reasons, while moving his focus from ethics to epistemology. His central aims are, first, to argue that theorizing in normative epistemology profits from comparison with other normative domains (his “Core Hypothesis” [9]); and second, to defend a picture of epistemic normativity that puts reasons first: they can be used to explain and analyze all other epistemic normative phenomena.Part 1 of the book provides a compelling account of normative reasons as competitors (which compete in determining, for instance, what one ought to do or believe) that are act-oriented rather than outcome-oriented, and can be acted on (my reasons to φ can be the reasons for which I φ). Schroeder assumes that there are both objective reasons, which bear on the correctness of belief, and subjective reasons, which determine its rationality or justification.Part 2 aims to solve the problem of unjustified belief for Reasons First epistemology. On this view, normative standings such as justification/rationality and knowledge bottom out in epistemic reasons. Yet it seems that only justified belief or knowledge can provide a subject S with reasons, so that we cannot take reasons as fundamental. So, apparently, perceptual experience—given that it itself is neither knowledge nor justified—cannot provide us with reasons or evidence. But this cannot be right, since perceptual experience is undoubtedly a privileged source of evidence concerning our surroundings. According to Schroeder, to allow for perceptual justification, we need a world-implicating conception of perceptual evidence, as endorsed by disjunctivism, which takes evidence to entail truths about the external world. At the same time, and contrary to disjunctivism, we must conceive of such evidence as nonfactive—it does not have to be true (or consist in a relation to a truth) and so is available not only in the good case of veridical perception but also in illusion or hallucination. Whether S’s belief is rational cannot hinge on minimal differences, as implied by disjunctivism. Schroeder illustrates this with a pair of cases C1 and C2 that are identical except that in C1, S undergoes a veridical perception, and in C2, she undergoes an indistinguishable illusion. (Say, in C1, S is looking at a red ball, but in C2, she is facing a white ball that appears red due to red lighting.) But, importantly, this illusion is a one-time occurrence—S has an otherwise flawless perceptual track record in C1 and C2. In both cases, S’s belief is equally rational, or so Schroeder argues.Schroeder thus rejects disjunctivism. Instead, he endorses the apparent factive attitude view: basic perceptual reasons are—nonfactive—subjective reasons, such as the proposition that I see that the ball is red. But since they entail worldly facts (such as: the ball is red), they are nonetheless world-implicating. For me to possess the reason, it has to appear to me that I see that the ball is red.In part 3, Schroeder addresses the problem of sufficiency—the worry that the balance of epistemic reasons by itself cannot properly determine whether a belief is justified or knowledge. For it is unclear by how much S’s evidence that p has to outweigh her evidence that not-p so as to render her belief that p justified or knowledge. It might appear that solving this problem forces us to abandon Reasons First epistemology since it presupposes the concept of rationality: what is needed is enough evidence to make belief rational. The related problem of near ties is that evidence that p that is at least as good as evidence that not-p does not always rationalize belief that p; in cases of (near) ties between evidence pro and con, withholding belief is rational instead. By contrast, in the practical case, reasons to φ that are at least as strong as reasons not to φ insure that φ-ing is rational. How might this difference be explained? A further puzzle discussed by Schroeder is raised by cases that have motivated philosophers to defend pragmatic encroachment. For instance, in Jason Stanley’s (2005) famous bank cases, in the high-stakes scenario, the believer plausibly needs more evidence in order to form a justified belief or to know than in the corresponding low-stakes scenario.Schroeder uses these and other puzzles to argue that there must be nonevidential epistemic reasons against believing that enter into the balance of reasons; the overall balance then determines which attitude is epistemically justified, thereby preserving Reasons First epistemology. Nonevidential reasons against belief include, among others, facts about the future availability of evidence or about the costs of error—that is, the costs of having or acting on false belief. Such reasons are ubiquitous and so can explain why in cases of near ties, the overall balance of reasons, which includes nonevidential reasons against belief in addition to the (nearly) balanced evidential reasons, does not rationalize belief that p. Regarding the problem of sufficiency: taking on board nonevidential reasons, the balance of epistemic reasons can all by itself determine the epistemic standing of belief.True to his core hypothesis, Schroeder uses comparisons with reasons for other attitudes, such as admiration, to argue that some nonevidential reasons against belief are right-kind reasons, which affect a belief’s epistemic standing. Right-kind reasons are considerations to which belief must be sensitive in order to successfully play its role in our cognitive economies—the role of providing us with considerations to rely on in reasoning by default, or as a matter of policy. Beliefs do so by simplifying reasoning and decision-making, as compared to credences, since they allow us to ignore remote error possibilities. According to Schroeder’s Pragmatic Intellectualism, facts about the (practical or moral) costs of error are then right-kind reasons against belief because they are considerations to whose truth belief must be sensitive to play its cognitive role well. The costs of error explain why otherwise sufficient evidence fails to justify belief in high-stakes scenarios: they are so high that they outweigh the subject’s evidence that p.In part 4, Schroeder details his Kantian account of knowledge. He analyzes knowledge as believing well, where the belief is a response to reasons that are jointly subjectively and objectively sufficient to outweigh all existing reasons against the belief, and thus sufficient to make it rational and correct. He motivates the account by analogy with right-reasons accounts of the moral worth of actions and by focusing on how reasons generally give rise not only to standards of correctness for a certain response, but—as something for which we can act—also to standards of acting well.I now turn to a critical comment on Schroeder’s argument against disjunctivism sketched above. He presents perceptual reasons in a propositional idiom—the idea being that we can attribute reasons by way of associated propositions without being committed to any particular ontology of reasons (41). For instance, the phrase “that S sees that the ball is red” can be used equally to characterize S’s mental state of seeing that the ball is red or the consideration that S sees that the ball is red, as her epistemic reason. My worry is that using a propositional idiom encourages a misconception of disjunctivism—namely, that it is committed to a hard line between veridical perception, on the one hand, and illusion and hallucination, on the other. Put differently, the propositional idiom encourages the thought that the only version of metaphysical disjunctivism available to the epistemological disjunctivist is a V v IH view. This misconception undergirds Schroeder’s argument against disjunctivism. Let me elaborate.We can identify the epistemological disjunctivist with Schroeder’s disjunctivist opponent in the book, who endorses the view that perception provides factive, world-implicating reasons. By contrast, metaphysical disjunctivism concerns the nature of perceptual experience. Crudely put, it states that veridical perception is a mental state of a fundamentally different nature than hallucination. Regarding the further perceptual state of illusion, it comes in two varieties, V v IH and VI v H (Byrne and Logue 2009: xi). V v IH says that veridical perception as the good case is fundamentally distinct from the bad case of illusion or hallucination; VI v H holds that the good case includes veridical perception and illusion, which share the same nature and differ fundamentally from the bad case of hallucination.If we characterize the reasons provided by perceptual experience propositionally, the truth of V v IH may seem obvious. Take my visual experience as of a red ball. An associated proposition is that the ball is red. For my experience to be veridical is for this proposition to be true, as in perception. In illusion and hallucination, the associated proposition turns out false—in illusion, for instance, the white ball looks red even though it is not; in hallucination, there is not even a ball that is visually presented. This suggests a metaphysical classification of illusion with hallucination as the bad case.If, however, we think of perceptual experience as fundamentally nonpropositional and instead directed at objects, it is natural to say—with VI v H—that perception and illusion both successfully acquaint us with objects. Accordingly, both my veridical and my illusory experience acquaint me with the ball in front of me. Illusion merely involves error with respect to how the object is presented—in the example, the white ball is misleadingly presented as red. This metaphysical picture of perceptual experience can be combined with the epistemological claim that the reasons provided by perception are the very objects with which we are acquainted (Brewer 2018). For the epistemological disjunctivist, this opens up the possibility that the subject’s epistemic rationality in the illusory and veridical cases may be on a par.Reconsider Schroeder’s argument that disjunctivism implausibly entails that a minimal one-time difference between good case C1 and bad case C2 makes for a major difference with respect to the subject’s rationality. According to VI v H, the minimally different case in which the subject undergoes an illusion instead of an indistinguishable veridical experience (64) is a good case. Perceptual illusion provides the same objectual reason as veridical perception. In the subject’s misleading circumstances and given her objectual reason, it is rational, at least in the sense of perfectly understandable, that she forms a false perceptual belief; her belief is justified, but not knowledge. (True, the disjunctivist is still committed to a major rational difference between veridical perception and hallucination. But it is much less plausible anyway that we can find a minimal one-time difference between veridical perception and hallucination, since much more has to go wrong for a subject to hallucinate.)Such a view would have to be elaborated in detail to judge its merits. Yet its in-principle availability suffices to show that disjunctivism is not automatically committed to implausible rational differences between minimally different good and bad cases. This, in turn, undermines one main motivation for adopting Schroeder’s apparent factive attitudes view. I suspect that his use of the propositional idiom partly explains why he fails to address the VI v H option that is available to his opponents.This criticism notwithstanding, Reasons First is a rich and rewarding read that paints a sweeping and convincing picture of epistemology as part of a broader normative landscape grounded in reasons. Especially intriguing is Schroeder’s account of how the balance of epistemic reasons, across a range of prima facie problematic cases, determines whether a belief is justified, and of how this balance of reasons can further be used to analyze the concept of knowledge. I expect Reasons First to greatly advance the debate about epistemic reasons in the coming years.I thank Giulia Martina and Simon Wimmer for helpful comments on an earlier version of this review.","PeriodicalId":48129,"journal":{"name":"PHILOSOPHICAL REVIEW","volume":"79 1","pages":"0"},"PeriodicalIF":2.8000,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PHILOSOPHICAL REVIEW","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1215/00318108-10469603","RegionNum":1,"RegionCategory":"哲学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"0","JCRName":"PHILOSOPHY","Score":null,"Total":0}
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Abstract

Mark Schroeder’s latest book delves deeper into the topic of normativity and reasons, while moving his focus from ethics to epistemology. His central aims are, first, to argue that theorizing in normative epistemology profits from comparison with other normative domains (his “Core Hypothesis” [9]); and second, to defend a picture of epistemic normativity that puts reasons first: they can be used to explain and analyze all other epistemic normative phenomena.Part 1 of the book provides a compelling account of normative reasons as competitors (which compete in determining, for instance, what one ought to do or believe) that are act-oriented rather than outcome-oriented, and can be acted on (my reasons to φ can be the reasons for which I φ). Schroeder assumes that there are both objective reasons, which bear on the correctness of belief, and subjective reasons, which determine its rationality or justification.Part 2 aims to solve the problem of unjustified belief for Reasons First epistemology. On this view, normative standings such as justification/rationality and knowledge bottom out in epistemic reasons. Yet it seems that only justified belief or knowledge can provide a subject S with reasons, so that we cannot take reasons as fundamental. So, apparently, perceptual experience—given that it itself is neither knowledge nor justified—cannot provide us with reasons or evidence. But this cannot be right, since perceptual experience is undoubtedly a privileged source of evidence concerning our surroundings. According to Schroeder, to allow for perceptual justification, we need a world-implicating conception of perceptual evidence, as endorsed by disjunctivism, which takes evidence to entail truths about the external world. At the same time, and contrary to disjunctivism, we must conceive of such evidence as nonfactive—it does not have to be true (or consist in a relation to a truth) and so is available not only in the good case of veridical perception but also in illusion or hallucination. Whether S’s belief is rational cannot hinge on minimal differences, as implied by disjunctivism. Schroeder illustrates this with a pair of cases C1 and C2 that are identical except that in C1, S undergoes a veridical perception, and in C2, she undergoes an indistinguishable illusion. (Say, in C1, S is looking at a red ball, but in C2, she is facing a white ball that appears red due to red lighting.) But, importantly, this illusion is a one-time occurrence—S has an otherwise flawless perceptual track record in C1 and C2. In both cases, S’s belief is equally rational, or so Schroeder argues.Schroeder thus rejects disjunctivism. Instead, he endorses the apparent factive attitude view: basic perceptual reasons are—nonfactive—subjective reasons, such as the proposition that I see that the ball is red. But since they entail worldly facts (such as: the ball is red), they are nonetheless world-implicating. For me to possess the reason, it has to appear to me that I see that the ball is red.In part 3, Schroeder addresses the problem of sufficiency—the worry that the balance of epistemic reasons by itself cannot properly determine whether a belief is justified or knowledge. For it is unclear by how much S’s evidence that p has to outweigh her evidence that not-p so as to render her belief that p justified or knowledge. It might appear that solving this problem forces us to abandon Reasons First epistemology since it presupposes the concept of rationality: what is needed is enough evidence to make belief rational. The related problem of near ties is that evidence that p that is at least as good as evidence that not-p does not always rationalize belief that p; in cases of (near) ties between evidence pro and con, withholding belief is rational instead. By contrast, in the practical case, reasons to φ that are at least as strong as reasons not to φ insure that φ-ing is rational. How might this difference be explained? A further puzzle discussed by Schroeder is raised by cases that have motivated philosophers to defend pragmatic encroachment. For instance, in Jason Stanley’s (2005) famous bank cases, in the high-stakes scenario, the believer plausibly needs more evidence in order to form a justified belief or to know than in the corresponding low-stakes scenario.Schroeder uses these and other puzzles to argue that there must be nonevidential epistemic reasons against believing that enter into the balance of reasons; the overall balance then determines which attitude is epistemically justified, thereby preserving Reasons First epistemology. Nonevidential reasons against belief include, among others, facts about the future availability of evidence or about the costs of error—that is, the costs of having or acting on false belief. Such reasons are ubiquitous and so can explain why in cases of near ties, the overall balance of reasons, which includes nonevidential reasons against belief in addition to the (nearly) balanced evidential reasons, does not rationalize belief that p. Regarding the problem of sufficiency: taking on board nonevidential reasons, the balance of epistemic reasons can all by itself determine the epistemic standing of belief.True to his core hypothesis, Schroeder uses comparisons with reasons for other attitudes, such as admiration, to argue that some nonevidential reasons against belief are right-kind reasons, which affect a belief’s epistemic standing. Right-kind reasons are considerations to which belief must be sensitive in order to successfully play its role in our cognitive economies—the role of providing us with considerations to rely on in reasoning by default, or as a matter of policy. Beliefs do so by simplifying reasoning and decision-making, as compared to credences, since they allow us to ignore remote error possibilities. According to Schroeder’s Pragmatic Intellectualism, facts about the (practical or moral) costs of error are then right-kind reasons against belief because they are considerations to whose truth belief must be sensitive to play its cognitive role well. The costs of error explain why otherwise sufficient evidence fails to justify belief in high-stakes scenarios: they are so high that they outweigh the subject’s evidence that p.In part 4, Schroeder details his Kantian account of knowledge. He analyzes knowledge as believing well, where the belief is a response to reasons that are jointly subjectively and objectively sufficient to outweigh all existing reasons against the belief, and thus sufficient to make it rational and correct. He motivates the account by analogy with right-reasons accounts of the moral worth of actions and by focusing on how reasons generally give rise not only to standards of correctness for a certain response, but—as something for which we can act—also to standards of acting well.I now turn to a critical comment on Schroeder’s argument against disjunctivism sketched above. He presents perceptual reasons in a propositional idiom—the idea being that we can attribute reasons by way of associated propositions without being committed to any particular ontology of reasons (41). For instance, the phrase “that S sees that the ball is red” can be used equally to characterize S’s mental state of seeing that the ball is red or the consideration that S sees that the ball is red, as her epistemic reason. My worry is that using a propositional idiom encourages a misconception of disjunctivism—namely, that it is committed to a hard line between veridical perception, on the one hand, and illusion and hallucination, on the other. Put differently, the propositional idiom encourages the thought that the only version of metaphysical disjunctivism available to the epistemological disjunctivist is a V v IH view. This misconception undergirds Schroeder’s argument against disjunctivism. Let me elaborate.We can identify the epistemological disjunctivist with Schroeder’s disjunctivist opponent in the book, who endorses the view that perception provides factive, world-implicating reasons. By contrast, metaphysical disjunctivism concerns the nature of perceptual experience. Crudely put, it states that veridical perception is a mental state of a fundamentally different nature than hallucination. Regarding the further perceptual state of illusion, it comes in two varieties, V v IH and VI v H (Byrne and Logue 2009: xi). V v IH says that veridical perception as the good case is fundamentally distinct from the bad case of illusion or hallucination; VI v H holds that the good case includes veridical perception and illusion, which share the same nature and differ fundamentally from the bad case of hallucination.If we characterize the reasons provided by perceptual experience propositionally, the truth of V v IH may seem obvious. Take my visual experience as of a red ball. An associated proposition is that the ball is red. For my experience to be veridical is for this proposition to be true, as in perception. In illusion and hallucination, the associated proposition turns out false—in illusion, for instance, the white ball looks red even though it is not; in hallucination, there is not even a ball that is visually presented. This suggests a metaphysical classification of illusion with hallucination as the bad case.If, however, we think of perceptual experience as fundamentally nonpropositional and instead directed at objects, it is natural to say—with VI v H—that perception and illusion both successfully acquaint us with objects. Accordingly, both my veridical and my illusory experience acquaint me with the ball in front of me. Illusion merely involves error with respect to how the object is presented—in the example, the white ball is misleadingly presented as red. This metaphysical picture of perceptual experience can be combined with the epistemological claim that the reasons provided by perception are the very objects with which we are acquainted (Brewer 2018). For the epistemological disjunctivist, this opens up the possibility that the subject’s epistemic rationality in the illusory and veridical cases may be on a par.Reconsider Schroeder’s argument that disjunctivism implausibly entails that a minimal one-time difference between good case C1 and bad case C2 makes for a major difference with respect to the subject’s rationality. According to VI v H, the minimally different case in which the subject undergoes an illusion instead of an indistinguishable veridical experience (64) is a good case. Perceptual illusion provides the same objectual reason as veridical perception. In the subject’s misleading circumstances and given her objectual reason, it is rational, at least in the sense of perfectly understandable, that she forms a false perceptual belief; her belief is justified, but not knowledge. (True, the disjunctivist is still committed to a major rational difference between veridical perception and hallucination. But it is much less plausible anyway that we can find a minimal one-time difference between veridical perception and hallucination, since much more has to go wrong for a subject to hallucinate.)Such a view would have to be elaborated in detail to judge its merits. Yet its in-principle availability suffices to show that disjunctivism is not automatically committed to implausible rational differences between minimally different good and bad cases. This, in turn, undermines one main motivation for adopting Schroeder’s apparent factive attitudes view. I suspect that his use of the propositional idiom partly explains why he fails to address the VI v H option that is available to his opponents.This criticism notwithstanding, Reasons First is a rich and rewarding read that paints a sweeping and convincing picture of epistemology as part of a broader normative landscape grounded in reasons. Especially intriguing is Schroeder’s account of how the balance of epistemic reasons, across a range of prima facie problematic cases, determines whether a belief is justified, and of how this balance of reasons can further be used to analyze the concept of knowledge. I expect Reasons First to greatly advance the debate about epistemic reasons in the coming years.I thank Giulia Martina and Simon Wimmer for helpful comments on an earlier version of this review.
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原因第一
马克·施罗德(Mark Schroeder)的新书深入探讨了规范性和理性的主题,同时将他的关注点从伦理学转移到了认识论。他的中心目标是,首先,论证规范认识论的理论化得益于与其他规范领域的比较(他的“核心假设”[9]);第二,为把理性放在首位的认知规范性理论辩护:理性可以用来解释和分析所有其他认知规范性现象。本书的第1部分提供了一个令人信服的说明,规范性理由作为竞争者(它们在决定,例如,一个人应该做什么或相信什么方面进行竞争),以行动为导向,而不是以结果为导向,并且可以采取行动(我φ的理由可以是我φ的理由)。施罗德认为,客观原因决定信仰的正确性,主观原因决定信仰的合理性或正当性。第二部分旨在解决理性第一认识论的不正当信仰问题。根据这一观点,正当性/合理性和知识等规范性立场在认识论推理中处于最底层。然而,似乎只有正当的信念或知识才能为主体S提供理由,所以我们不能把理由作为根本。因此,显然,知觉经验——假定它本身既不是知识也不是被证明的——不能为我们提供理由或证据。但这不可能是对的,因为感知经验无疑是我们周围环境证据的特权来源。根据施罗德的观点,为了允许知觉证明,我们需要一个包含世界的知觉证据概念,这得到了分离论的支持,它认为证据包含了关于外部世界的真理。与此同时,与分离论相反,我们必须把这样的证据想象成非事实性的——它不一定是真的(或与真理有关系),因此不仅在真实知觉的良好情况下,而且在幻觉或幻觉中都是可用的。S的信念是否理性,不能像分离论所暗示的那样取决于最小的差异。施罗德用两种情况C1和C2说明了这一点,除了在C1中,S经历了真实的感知,而在C2中,她经历了难以区分的错觉。(比如,在C1中,S正看着一个红色的球,但在C2中,她面对的是一个由于红色照明而呈现红色的白球。)但是,重要的是,这种错觉是一次性发生的——s在C1和C2中有一个完美的知觉记录。在这两种情况下,S的信念都是同样理性的,至少施罗德是这样认为的。因此,施罗德拒绝分离主义。相反,他赞同明显的事实态度观点:基本的知觉原因是非事实的主观原因,比如我看到球是红色的命题。但由于它们包含了世俗的事实(例如:球是红色的),它们仍然具有世界意义。要让我拥有理性,就必须让我看到球是红色的。在第三部分中,施罗德提出了充分性的问题——他担心认知理性的平衡本身不能恰当地决定一种信念是正当的还是知识。因为不清楚S关于p的证据要比她关于非p的证据多多少才能使她相信p是合理的或者是知识。解决这个问题似乎迫使我们放弃理性第一认识论,因为它以理性的概念为前提:我们需要的是足够的证据来证明信仰是理性的。近联系的相关问题是证明p的证据至少和证明非p的证据一样好并不总是使相信p合理化;在证据支持和反对(接近)联系的情况下,保留信念反而是理性的。相反,在实际情况中,φ的理由至少与不φ的理由同样有力,以确保φ-ing是理性的。如何解释这种差异呢?施罗德讨论的另一个谜题是由促使哲学家为实用主义侵犯辩护的案例提出的。例如,在Jason Stanley(2005)著名的银行案例中,与相应的低风险情景相比,在高风险情景中,信仰者似乎需要更多的证据才能形成合理的信念或了解。施罗德用这些和其他的谜题来论证,一定有非证据性的认知理由来反对进入理由平衡的信仰;然后,整体平衡决定了哪种态度在认识论上是合理的,从而保留了“原因第一”的认识论。反对信念的非证据性理由包括有关未来证据可获得性的事实或有关错误代价的事实——即拥有或根据错误信念行事的代价。 这样的理由是无处不在的,因此可以解释为什么在紧密联系的情况下,除了(几乎)平衡的证据理由之外,还包括反对信仰的非证据理由的总体平衡,并没有使p的信念合理化。关于充分性问题:考虑到非证据理由,认知理由的平衡本身就可以决定信仰的认知立场。忠实于他的核心假设,Schroeder通过与其他态度(如钦佩)的原因进行比较,来论证一些反对信仰的非证据性原因是正确的原因,它会影响信仰的认知论地位。为了在我们的认知经济中成功地发挥作用,信念必须敏感地考虑到正确的原因——在默认推理或作为政策问题时,为我们提供依赖的考虑因素。与信任相比,信念通过简化推理和决策来做到这一点,因为它们允许我们忽略遥远的错误可能性。根据施罗德的实用主义理智主义,关于错误的(实际的或道德的)代价的事实是反对信仰的正确理由,因为它们是信仰必须对其真理敏感的考虑因素,才能很好地发挥其认知作用。错误的代价解释了为什么在高风险的情况下,充足的证据无法证明信念是正确的:错误的代价如此之高,以至于超过了受试者的证据,以至于p.在第四部分中,施罗德详细介绍了他对知识的康德式描述。他把知识分析为良好的信念,其中信念是对主观上和客观上共同足以压倒所有反对信念的现有理由的原因的反应,从而足以使其成为理性和正确的。他通过类比正确的理性来解释行为的道德价值,并关注理性如何不仅产生某种反应的正确标准,而且作为我们可以采取行动的东西,还产生了行为良好的标准。现在,我转而对施罗德上面所概述的反对分离主义的论点进行批评。他以命题式的习语表达了感性的理由——即我们可以通过相关的命题来赋予理由,而不必受制于任何特定的理由本体论(41)。例如,短语" S看到球是红色的"同样可以用来描述S看到球是红色的心理状态或者S看到球是红色的考虑,作为她的认知原因。我担心的是,使用命题式成语会助长对分离主义的误解——也就是说,它坚持在真实感知与幻觉和幻觉之间划清界限。换句话说,命题习语鼓励了这样一种想法,即认识论的析取论者唯一能得到的形而上学析取论版本是V - V - h观点。这种误解巩固了施罗德反对分离主义的论点。让我详细说明一下。我们可以将认识论的分离论者与书中施罗德的分离论者区分开来,后者支持感知提供了实际的,暗示世界的原因的观点。相比之下,形而上学的分离主义关注的是感性经验的本质。粗略地说,它认为真实知觉是一种本质上与幻觉完全不同的精神状态。关于幻觉的进一步感知状态,它有两种类型,V V IH和VI V H (Byrne和Logue 2009: xi) V V IH认为,作为好情况的真实感知从根本上不同于错觉或幻觉的坏情况;VI v H认为,好情况包括真实知觉和幻觉,它们具有相同的性质,与幻觉的坏情况有根本区别。如果我们以命题的方式来描述由感知经验提供的原因,那么V / h的真理似乎是显而易见的。把我的视觉体验当成一个红球。一个相关的命题是球是红色的。我的经验是真实的就是这个命题是真实的,就像在知觉中一样。在幻觉和幻觉中,相关的命题被证明是错误的——例如,在幻觉中,白球看起来是红色的,尽管它不是;在幻觉中,甚至没有一个球被视觉呈现。这暗示了一种形而上学的错觉分类,幻觉是一种糟糕的情况。然而,如果我们认为知觉经验从根本上是非命题性的,而是指向对象的,那么我们很自然地就会说——用VI v h——知觉和幻觉都成功地使我们熟悉了对象。因此,我真实的和虚幻的经验都使我熟悉我面前的球。错觉仅仅涉及到物体如何呈现的错误——在这个例子中,白球被误认为是红色的。 这种感性经验的形而上学图景可以与认识论的主张相结合,即由知觉提供的原因正是我们所熟悉的对象(Brewer 2018)。对于认识论的分离主义者来说,这开启了一种可能性,即主体在虚幻和真实情况下的认识理性可能处于同一水平。重新考虑施罗德的论点,即分离主义不可思议地认为,好情况C1和坏情况C2之间的最小一次性差异会导致主体理性的重大差异。根据VI v H,最小差异的情况下,受试者经历幻觉而不是难以区分的真实经验(64)是一个很好的情况。知觉错觉提供了与真实知觉相同的客观原因。在主体被误导的情况下,考虑到她的客观理性,至少在完全可以理解的意义上,她形成了一个错误的感性信念是合理的;她的信念是正确的,但不是知识。(诚然,分离论者仍然坚持认为真实知觉和幻觉之间存在着重大的理性区别。但是,如果我们能在真实知觉和幻觉之间找到一个极小的一次性差异,那就不太可信了,因为受试者要产生幻觉,还需要出更多的差错。)必须详细阐述这种观点,以判断其优点。然而,它在原则上的可用性足以表明,分离主义并不自动致力于在最小差异的好与坏案例之间存在难以置信的理性差异。这反过来又削弱了采纳施罗德明显的积极态度观点的一个主要动机。我怀疑他对命题式成语的使用在一定程度上解释了为什么他没有解决对手可以使用的VI vs H选项。尽管有这种批评,《理由第一》是一本丰富而有益的读物,它描绘了一幅全面而令人信服的认识论图景,作为以理由为基础的更广泛的规范景观的一部分。特别有趣的是,施罗德在一系列表面上有问题的案例中,阐述了认知原因的平衡如何决定一种信念是否合理,以及这种原因的平衡如何进一步用于分析知识的概念。我希望《理由第一》一书在未来几年能极大地推动关于认知理由的辩论。我要感谢Giulia Martina和Simon Wimmer对本文早期版本的有益评论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
PHILOSOPHICAL REVIEW
PHILOSOPHICAL REVIEW PHILOSOPHY-
CiteScore
7.40
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0.00%
发文量
17
期刊介绍: In continuous publication since 1892, the Philosophical Review has a long-standing reputation for excellence and has published many papers now considered classics in the field, such as W. V. O. Quine"s “Two Dogmas of Empiricism,” Thomas Nagel"s “What Is It Like to Be a Bat?” and the early work of John Rawls. The journal aims to publish original scholarly work in all areas of analytic philosophy, with an emphasis on material of general interest to academic philosophers, and is one of the few journals in the discipline to publish book reviews.
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