In this paper I present reasons for us to accept the hypothesis that suspended judgment has correctness conditions, just like beliefs do. Roughly put, the idea is that suspended judgment about p is correct when both p and ¬p might be true in view of certain facts that characterize the subject’s situation. The reasons to accept that hypothesis are broadly theoretical ones: it adds unifying power to our epistemological theories, it delivers good and conservative consequences, and it allows us to (...) assess processes of reasoning involving attitudes of suspended judgment. (shrink)

Logic arguably plays a role in the normativity of reasoning. In particular, there are plausible norms of belief/disbelief whose antecedents are constituted by claims about what follows from what. But is logic also relevant to the normativity of agnostic attitudes? The question here is whether logical entailment also puts constraints on what kinds of things one can suspend judgment about. In this paper I address that question and I give a positive answer to it. In particular, I advance two logical (...) norms of agnosticism, where the first one allows us to assess situations in which the subject is agnostic about the conclusion of a valid argument and the second one allows us to assess situations in which the subject is agnostic about one of the premises of a valid argument. (shrink)

How does rationality bind the agnostic, that is, the one who suspends judgment about whether a given proposition is true? In this paper I explore two alternative ways of establishing what the rational requirements of agnosticism are: the Lockean–Bayesian framework and the doxastic logic framework. Each of these proposals faces strong objections. Fortunately, however, there is a rich kernel of requirements of agnosticism that are vindicated by both of them. One can then endorse the requirements that belong to that kernel (...) without thereby committing oneself to the problematic implications that stem from either of the aforementioned proposals. (shrink)

Why should we avoid incoherence? An influential view tells us that incoherent combinations of attitudes are such that it is impossible for all of those attitudes to be simultaneously vindicated by the evidence. But it is not clear whether this view successfully explains what is wrong with certain akratic doxastic states. In this paper I flesh out an alternative response to that question, one according to which the problem with incoherent combinations of attitudes is that it is impossible for all (...) of those attitudes to be simultaneously knowledgeable. This alternative response explains what is wrong with akratic combinations of attitudes using commonly accepted epistemological theses. The paper still shows how this proposal is able to explain the badness of incoherent combinations involving the absence of attitudes, suspended judgment and credence. These explanations deploy the notions of knowledge and being in a position to know, instead of the notion of responding properly to the evidence. Finally, I suggest that this picture can be generalized to the realm of practical rationality as well. (shrink)

In this paper, I offer two counterexamples to the so-called ‘Uniqueness Thesis.’ As one of these examples rely on the thesis that it is possible for a justified belief to be based on an inconsistent body of evidence, I also offer reasons for this further thesis. On the assumption that doxastic justification entails propositional justification, the counterexamples seem to work.

In this paper I explore alternative ways of addressing the infinite regress problem of inference, as it was depicted in Lewis Carroll’s ‘What the Tortoise said to Achilles’. Roughly put, the problem is that if a claim to the effect that one’s premises give support to one’s conclusion must itself be part of one’s premises, then an infinite regress of reasons ensues. I discuss some recent attempts to solve that problem, but I find all of them to be wanting. Those (...) attempts either require the reasoner to believe that her premises give support to her conclusion, or to take her premises to give support to her conclusion, where taking is not a doxastic attitude. I conclude that, on the face of the failure of those attempts to solve the problem, there is a strong prima facie case for allowing inference to be blind. (shrink)

The paper is concerned with the rational requirements for suspended judgment, or what suspending judgment about a question rationally commits one to. It shows that two purported rational requirements for suspended judgment cannot both be true at the same time, at least when the entailment relation between questions is understood a certain way. The first one says that one is rationally required to suspend judgment about those questions that are entailed by the questions that one already suspends judgment about. The (...) second one says that one is rationally required to believe the presuppositions of the questions one suspends judgment about. Two plausible solutions to the problem are discussed. One of them explicates the relation of entailment between questions in an alternative manner, and the other one rejects the presupposition requirement. Either way, a closure requirement for suspended judgment can be maintained which is analogous to the closure requirement for belief. Whereas belief is ideally closed under entailment between propositions, suspended judgment is ideally closed under entailment between questions. (shrink)

Epistemologists often describe subjects as being capable of adopting a third kind of categorical doxastic stance regarding whether something is the case, besides belief and disbelief. They deploy a variety of idioms in order to ascribe that stance. In this paper, I flesh out the properties that the third kind of categorical stance is supposed to have and start searching for the best ways to ascribe it. The idioms ‘suspends judgment about whether’ and ‘is agnostic about whether’, among others, are (...) found to be unfit to play the desired role. In the end, I suggest that ‘is in doubt as to whether’ is our best choice among the alternatives surveyed here. (shrink)

I reinforce my defense of permissivism about the rationality of doxastic attitudes on the face of a certain body of evidence against criticism published in this journal by Anantharaman. After making some conceptual clarifications, I manage to show that at least one of my original arguments pro-permissivism is left unscathed by Anantharaman's points.

There are many ways in which a speaker can confuse their audience. In this paper, I will focus on one such way, namely, a way of talking that seems to manifest a cross-level kind of cognitive dissonance on the part of the speaker. The goal of the paper is to explain why such ways of talking sound so twisted. The explanation is two-pronged, since their twisted nature may come either from the very mental states that the speaker thereby makes manifest, (...) or from how the speaker chooses to express themselves (even if there is nothing wrong with their mental states). So-called ‘Moore-paradoxical’ utterances are but one example of the phenomenon, and the explanation of what is wrong about them is subsumed under a more general explanation here—one that captures also the twisted-ness of utterances whereby questions are raised or intentions expressed. (shrink)

In this paper I deal with epistemological issues that stem from the hypothesis that reasoning is not only a means of transmitting knowledge from premise-beliefs to conclusion-beliefs, but also a primary source of knowledge in its own right. The idea is that one can gain new knowledge on the basis of suppositional reasoning. After making some preliminary distinctions, I argue that there are no good reasons to think that purported examples of knowledge grounded on pure reasoning are just examples of (...) premise-based inferences in disguise. Next, I establish what kinds of true propositions can to a first approximation be known on the basis of pure reasoning. Finally, I argue that beliefs that are competently formed on the basis of suppositional reasoning satisfy both externalist and internalist criteria of justification. (shrink)

In this paper, I deal with a version of the epistemic regress problem. After rejecting foundationalism as a solution to it, I consider two versions of infinitism. The first one is found to be unacceptable, for it fails both to cohere with certain attributions of justification and also to maintain its internal coherence. The second one avoids both problems, and it is found to be the best way of addressing the epistemic regress problem. As the successful version of infinitism makes (...) use of the notion of a rational disposition to form and deploy reasons, I also manage to explicate that notion. (shrink)

Epistemologists take themselves to disagree about whether there are situations where it is rational for one to believe that p and rational for one to believe that one’s evidence does not support p (rational akrasia). The embedded sentence ‘one’s evidence does not support p’ can be interpreted in two ways, however, depending on what the semantic contribution of ‘one’s evidence’ is taken to be. ‘One’s evidence’ might be seen as a sheer indexical or as a descriptive singular term. The first (...) interpretation makes the relevant kind of rational akrasia impossible, whereas the second one makes it possible. But the proposition that is taken to be expressed by ‘one’s evidence does not support p’ by each of these interpretations is not the same. We thus have a rational reconstruction of views that are labeled as being for and against the possibility of rational akrasia according to which they do not really contradict each other. (shrink)

In this paper, I flesh out an account of the inferential basing relation using a theory about how humans reason: the mental models theory. I critically assess some of the notions that are used by that theory to account for inferential phenomena. To the extent that the mental models theory is well confirmed, that account of basing would be motivated on empirical grounds. This work illustrates how epistemologists could offer explications of the basing relation which are more detailed and less (...) empirically risky. (shrink)

This is a correction to: Luis Rosa, Coherence and Knowability, The Philosophical Quarterly, 2022, pqab076, https://doi.org/10.1093/pq/pqab076.

Na primeira parte deste estudo, defendemos que a afirmação de que um sujeito S crê que ϕ com base em boas razões não pode ser o único tipo de explicação para o fato de que S racionalmente crê que ϕ. Explicar atribuições de racionalidade somente por meio da noção de uma crença baseada em boas razões gera uma versão do problema do regresso das razões. Na segunda parte, apresentamos uma hipótese de acordo com a qual algumas crenças são racionalmente mantidas (...) por um sujeito S em virtude do fato de que S sabe como produzir boas razões para sustentá-las. Na terceira parte, oferecemos razões para aceitar a hipótese relevante e argumentamos que ela é superior a teorias fundacionistas e coerentistas ao explicar a verdade de algumas atribuições de racionalidade. Na última parte do artigo, tratamos do problema do regresso das razões e esboçamos uma solução para tal problema, a partir de nossa hipótese. (shrink)

In the first part of this paper, we argue that the claim that a subject S believes that ϕ on the basis of good reasons cannot be the only type of explanation why S rationally believes that ϕ. Explaining attributions of rationality only by means of the notion of a belief being based on good reasons generates one version of the problem of regress of reasons. In the second part we flesh out a hypothesis according to which some beliefs are (...) rationally held by a subject S in virtue of the fact that S knows how to produce good reasons for holding them. In the third part we offer reasons for accepting the relevant hypothesis, and we argue that it is more successful than foundationalist, coherentist and infinitist theories in explaining the truth of some attributions of epistemic rationality. In the last part we address the problem of the regress of reasons and sketch a solution for it based on our hypothesis. (shrink)

A proposição expressa por “Deus existe”, se é verdadeira ou falsa, ela é ou necessariamente verdadeira/falsa ou não necessariamente verdadeira/falsa. Em outras palavras, se G é capaz de ter um valor de verdade v, então ela é ou necessariamente v ou contingentemente v. por “Deus” eu quero significar um ser sobrenatural, com uma mente poderosa e imaterial que supostamente criou o universo. Certamente existem outros significados que estão vinculados a esse termo em certos contextos, mas os argumentos que eu irei (...) avaliar aqui só fazem sentido sob essa interpretação. (shrink)

Este artigo abre espaço para discutir a relação entre teologia e ontologia, a partir da ética da alteridade de Emmanuel Lévinas. Trata-se de analisar e compreender o movimento de êxodo ou de evasão ética em relação à força ontológica, ao peso do ser, que impacta também à teologia. O sujeito, exposto à aventura do ser, é alguém cativo de si mesmo. Por outro lado, cabe refletir sobre algumas possíveis repercussões teológicas que emergem da epifania do rosto do/a Outro/a. Pois, embora (...) Lévinas trilhe mais pelo caminho da filosofia, sua obra se deixa conduzir pela sabedoria bíblico-talmúdica. De modo que há, na ética levinasiana, um ressoar do teológico, uma espécie de ferida que lateja e testemunha um vestígio, um eco do Infinito no rosto da viúva, do órfão e do estrangeiro. A entrada de um/a Outro/a anuncia o tempo da esperança quando aparentemente já não há mais esperança. Então, o milagre que salva o mundo, anúncio de uma boa-nova que comunica o Verbo que se fez carne. Essa é também possibilidade do bem, da exposição – hospitalidade – do eis-me aqui e, então, envia-me. (shrink)

Neste artigo trato da questão sobre o que torna uma dedução confiável. Uma resposta satisfatória a tal questão nos ajudaria a entender como dedução pode expandir ou gerar conhecimento. Eu exploro duas respostas a tal questão. A primeira faz uso da noção de acarretamento lógico-formal, enquanto que a segunda faz uso da noção de acarretamento metafísico. A última é superior à primeira, pois nos permite explicar a confiabilidade de uma classe mais ampla de deduções.

Neste artigo trato da questão sobre o que torna uma dedução confiável. Uma resposta satisfatória a tal questão nos ajudaria a entender como dedução pode expandir ou gerar conhecimento. Eu exploro duas respostas a tal questão. A primeira faz uso da noção de acarretamento lógico-formal, enquanto que a segunda faz uso da noção de acarretamento metafísico. A última é superior à primeira, pois nos permite explicar a confiabilidade de uma classe mais ampla de deduções.

Ludwig Boltzmann is one of the foremost responsible for the development of modern atomism in thermodynamics. His proposition was revolutionary not only because it brought a new vision for Thermodynamics, merging a statistical approach with Newtonian physics, but also because he produced an entirely new perspective on the way of thinking about and describing physical phenomena. Boltzmann dared to flirt with constructivism and realism simultaneously, by hypothesizing the reality of atoms and claiming an inherent probabilistic nature related to many particles (...) systems. Boltzmann faced criticism from the positivists, who rejected the hypothesis of the atom as a matter of principle, and also from physicists, who rejected the idea of a classical bounded system that does not follow deterministic mechanical laws. We consider that Boltzmann thermodynamics has emerged as a systemic theory that deals with macroscopic bodies using collective variables; it was reformulated to a kinetic theory of gases, and subsequently to statistical mechanics. From the theoretical physical point of view, Boltzmann advocates an approach to thermodynamics based on mechanics and was one of the founders of statistical mechanics, together with ideas by Maxwell, Clausius and Gibbs. Subsequently, statistical mechanics has also influenced the development of quantum mechanics and information theory. Using an evolutionary epistemological perspective as a metaphor to describe the physical entities claimed in Boltzmann propositions, we interpret his work as a selected theory that gained attributes of reality and “survived” during a scientific-contextual competition to be more adapted, in the sense that it was able to better explain physical phenomena, and also generated “descendants”. (shrink)

Sobrepondo uma concepção crítica envolvendo os fundamentos do saber às ontologias dogmáticas que se impõem ao trabalho que implica a apreensão das questões filosóficas, o projeto kantiano propõe o fim da filosofia como construção metafísica e a necessidade de se lhe atribuir uma tarefa teórica de caráter essencialmente genealógico e crítico, no sentido que encerra a legitimação do conhecimento racional através da análise das faculdades que se lhe estão atreladas, conforme assinala o artigo, que se detém nos direitos da razão (...) cuja legitimidade a lógica da verdade reconhece e cuja ilegitimidade a lógica da aparência denuncia, convergindo para as fronteiras que encerram a possibilidade da construção do conhecimento científico, à medida que, tornando o entendimento o legislador universal da natureza e circunscrevendo a utilização das categorias aos limites da experiência possível, propõe as condições necessárias para fundá-lo sobre os juízos sintéticos a priori. (shrink)

In this paper, we offer an alternative interpretation for the claim that ‘S is justified in believing that φ’. First, we present what seems to be a common way of interpreting this claim: as an attribution of propositional justification. According to this interpretation, being justified is just a matter of having confirming evidence. We present a type of case that does not fit well with the standard concept, where considerations about cognition are made relevant. The concept of cognitive algorithm is (...) presented and explained. Finally, the new reading of ‘S is justified in believing that φ’ is fleshed out. According to this interpretation, being justified in believing that φ is not just a matter of having evidence in favor of φ, but also of having a cognitive algorithm available such that it allows one to form belief in φ on the basis of the relevant evidence. (shrink)

In this paper I address the question 'How is knowledge of logical truths possible'. The sought-after explanation should be independent of what the true story about logical truth is. In particular, I try to account for the epistemic warrant that is conferred upon logical beliefs when they are neither inferred from other beliefs nor grounded on empirical evidence or testimony. The need for such an account is motivated by the apparent failure of the notions ofanalyticity on the one hand and (...) intuition on the other in addressing the relevant question. I end up defending an account according to which warranted logical beliefs can be grounded on pure reasoning: they can be inferentially formed on the basis of pieces of suppositional reasoning. (shrink)

This academic text features articles regarding paranormal, extraordinary, or fringe-science claims. It logically examines the claims of astrology; psychic ability; alternative medicine and health claims; after-death communication; cryptozoology; and faith healing, all from a skeptical perspective. Paranormal Claims is a compilation of some of the most eye-opening articles about pseudoscience and extraordinary claims that often reveal logical, scientific explanations, or an outright scam. These articles, steeped in skepticism, teach critical thinking when approaching courses in psychology, sociology, philosophy, education, or science.

In the course of the history of science, some concepts have forged theoretical foundations, constituting paradigms that hold sway for substantial periods of time. Research on the history of explanations of the action of one body on another is a testament to the periodic revival of one theory in particular, namely, the theory of ether. Even after the foundation of modern Physics, the notion of ether has directly and indirectly withstood the test of time. Through a spontaneous physics philosophical analysis, (...) this article will explore how certain aspects of the concept of ether have appeared in different branches of the history of science. (shrink)