Scientific Truth

This is a brief conceptual analysis of the limitations of 'scientific' empiricism which I tried to convey without any possible scientific or philosophical jargon which are commonly used by scientists or philosophers and which are difficult for others to understand. The terms which appear as jargon here do not need to be understood literally as they are supposed to convey mere examples rather than meaning.

Scientific realism is a thesis about the success of science. Most traditionally: science has been so successful at prediction and guiding action because its best theories are true (or approximately true or increasing in their degree of truth). If science is in the business of doing its best to generate true theories, then we should turn to those theories for explanatory knowledge, predictions, and guidance of our actions and decisions. Views that are popular in contemporary philosophy of science about scientific (...) modeling and the centrality of idealization create several challenges for this traditional form of scientific realism. Yet the basic idea behind scientific realism that science has been and will continue to be epistemically successful is deeply appealing. This chapter explores the challenges posed by idealization and scientific modeling to motivate a scientific realism fully divorced from the idea that science is in the business of generating true theories. On the resulting view, the objects of scientific knowledge are causal patterns, so this knowledge only ever provides partial, simplified accounts of a complex reality. This variety of selective realism better accommodates the nature of our present-day scientific successes and offers an interpretation of scientific progress that resists the antirealist’s pessimism. (shrink)

The traditional No-Miracles Argument (TNMA) asserts that the novel predictive success of science would be a miracle, and thus too implausible to believe, if successful theories were not at least approximately true. The TNMA has come under fire in multiple ways, challenging each of its premises and its general argumentative structure. While the TNMA relies on explaining novel predictive success via the truth of the theories, we put forth a deductive version of the No-Miracles argument (DNMA) that avoids inference to (...) the best explanation entirely. Instead, a relatively simple empirical framework and a probabilistic analysis can accomplish the ambitious goals of the TNMA while entirely sidestepping its problems. This close-but-distinct argument has many independent strengths and comparatively few weaknesses. Indeed, objections tailored specifically to the DNMA reveal surprising insights into how exactly NMAs are neither circular nor question-begging, as has been widely speculated. (shrink)

"La struttura delle rivoluzioni scientifiche", dopo più di mezzo secolo dalla sua pubblicazione, è ancora in grado di offrire un contributo alla pratica filosofica? In questo articolo, attraverso i concetti peirceani di Abito, Abduzione e Verità, si propone una lettura pragmaticista del testo di Kuhn che intende rilanciare un fecondo confronto, ancora poco considerato, tra i due filosofi.

Truth is the degree of accuracy when representing reality. We postulate three cognitive stages: the psychon, produced by perception; the construct, produced by intellection; and the speech act, produced by communication. Truth lies in the second; only constructs are alethic. Truth is a quality which takes place in degrees. Certainty is the unreachable perfect tip of this gradation, so it is an ideal concept. A thesis is deemed true if its alethical degree is acceptably efficacious, otherwise the thesis is deemed (...) false. Put in other words, we deem true any thesis not having enough fails to deem it false. (shrink)

I distinguish three primary notions of objectivity that may be applied to the sciences. There is an ontological sense of objectivity which relates to the way in which the natural world exists independently of human thought. There is a semantic form of objectivity which relates to the nature of truth. There is an epistemic notion of objectivity which relates to the methodological norms and procedures which are employed in the sciences, and the epistemic justification of beliefs and theories which are (...) licensed by those norms and procedures. These three forms of objectivity may be brought into conjunction. It is because we employ methods of scientific inquiry which function to exclude subjective factors and to incorporate only genuinely epistemic factors that the results and theories of the sciences should be accepted. They should be accepted because by employing such methods we have the best chance of arriving at true beliefs about the nature of reality. In short, it is the epistemic objectivity of the methods of science that leads us to the objective truth about the objective world. (shrink)

This paper is a response to Baumann's comments on "Can Knowledge Really be Non-fative?" In this paper Baumann's suggestions for how those who deny the factivty of knowledge might deal with the argument from inconsistency and explosion are addressed.

La vérité est le degré d’exactitude d’une représentation de la réalité. Nous postulons trois étapes cognitives : le psychon, produit par la perception ; le construit, produit par intellection; et l’acte de parole, produit par la communication. La vérité se trouve à la seconde étape; seuls les construits sont aléthiques. La vérité est une qualité qui vient en degrés. La certitude est le point d’aboutissement parfait et inaccessible de cette gradation ; il s’agit donc d’un concept idéal. Une thèse est (...) réputée vraie si son degré aléthique est acceptablement efficace, sinon la thèse est considérée comme fausse. En d’autres termes, nous jugeons vraie toute thèse n’ayant pas assez d’échecs pour qu’elle soit considérée fausse. (shrink)

There are various conceptions of objectivity, a characteristic of the scientific enterprise, the most fundamental being objectivity as faithfulness to facts. A brute fact, which happens independently from us, becomes a scientific fact once we take cognisance of it through the means made available to us by science. Because of the complex, reciprocal relationship between scientific facts and scientific theory, the concept of objectivity as faithfulness to facts does not hold in the strict sense of an aperspectival faithfulness to brute (...) facts. Nevertheless, it holds in the large sense of an underdetermined faithfulness to scientific facts, as long as we keep in mind the complexity of the notion of scientific fact (as theory-laden), and the role of non-factual elements in theory choice (as underdetermined by facts). Science remains our best way to separate our factual beliefs from our other kinds of beliefs. (shrink)

In True enough,, Elgin argues against veritism, which is the view that truth is the paramount epistemic objective. Elgin’s argument against veritism proceeds from considering the role that models, idealizations, and thought experiments play in science to the conclusion that veritism is unacceptable. In this commentary, I argue that Elgin’s argument fails as an argument against veritism. I sketch a refutation by logical analogy of Elgin’s argument. Just as one can aim at gold medals and still find approximations to gold, (...) such as silver and bronze medals, to be acceptable and honest achievements in competitive sports, one can aim at full truths as the paramount epistemic objective and still find approximations to truth, such as models and idealizations, to be acceptable and honest achievements in scientific inquiry. (shrink)

Elgin offers an influential and far-reaching challenge to veritism. She takes scientific understanding to be non-factive and maintains that there are epistemically useful falsehoods that figure ineliminably in scientific understanding and whose falsehood is no epistemic defect. Veritism, she argues, cannot account for these facts. This paper argues that while Elgin rightly draws attention to several features of epistemic practices frequently neglected by veritists, veritists have numerous plausible ways of responding to her arguments. In particular, it is not clear that (...) false propositional commitments figure ineliminably in understanding in the manner supposed by Elgin. Moreover, even if scientific understanding were non-factive and false propositional commitments did figure ineliminably in understanding, the veritist can account for this in several ways without thereby abandoning veritism. (shrink)

The notion of understanding occupies an increasingly prominent place in contemporary epistemology, philosophy of science, and moral theory. A central and ongoing debate about the nature of understanding is how it relates to the truth. In a series of influential contributions, Catherine Elgin has used a variety of familiar motivations for antirealism in philosophy of science to defend a non- factive theory of understanding. Key to her position are: (i) the fact that false theories can contribute to the upwards trajectory (...) of scientific understanding, and (ii) the essential role of inaccurate idealisations in scientific research. Using Elgin’s arguments as a foil, I show that a strictly factive theory of understanding has resources with which to offer a unified response to both the problem of idealisations and the role of false theories in the upwards trajectory of scientific understanding. Hence, strictly factive theories of understanding are viable notwithstanding these forceful criticisms. (shrink)

I provide a critical review of Moti Mizrahi's The Relativity of Theory, expounding on the book's strengths and then providing an extended argument that Mizrahi mischaracterizes the epistemic attitude of concern to antirealism about science as well as the practical stakes involved in adopting the antirealist position.

Algunos defensores del realismo científico, particularmente Ilkka Niiniluoto y Philip Kitcher, han intentado moderar las tesis ontológicas más fuertes del realismo buscando la integración de la teoría de la verdad como correspondencia con alguna versión matizada del relativismo conceptual propugnado por Putnam, según el cual el mundo carece de una estructura propia y, por tanto, la ontología depende de nuestros esquemas conceptuales. No es claro, sin embargo, que ambas cosas se puedan armonizar fácilmente. Si nuestro conocimiento del mundo está mediado (...) por nuestras categorías y conceptos, y si además la elección de esas categorías y conceptos puede variar en función de nuestros intereses y no obedecen a la existencia de unos supuestos géneros naturales o a una estructura propia del mundo, se torna entonces problemático establecer a qué corresponden nuestros enunciados verdaderos. ¿Corresponden al mundo independiente de nuestra mente o al mundo estructurado por nosotros mediante nuestras categorías y conceptos? En este artículo se presentarán las principales dificultades que encuentra este proyecto de realismo moderado tanto en Niiniluoto como en Kitcher, se analizarán sus propuestas para solventar dichas dificultades, mostrando sus insuficiencias y, finalmente, se propondrá una modalidad de realismo ontológico moderado que, recogiendo algo del espíritu de la relatividad conceptual de Putnam, es lo suficientemente fuerte como para sustentar una teoría de la verdad como correspondencia. Replucación autorizada. Publicado por primera vez en Contrastes vol. XII. (shrink)

Le réalisme scientifique occupe une place centrale dans le système philosophique de Mario Bunge. Au cœur de cette thèse, on trouve l’affirmation selon laquelle nous pouvons connaître le monde partiellement. Il s’ensuit que les théories scientifiques ne sont pas totalement vraies ou totalement fausses, mais plutôt partiellement vraies et partiellement fausses. Ces énoncés sur la connaissance scientifique, à première vue plausible pour quiconque est familier avec la pratique scientifique, demandent néanmoins à être clarifiés, précisés et, ultimement, à être inclus dans (...) un cadre théorique plus large et rigoureux. Depuis ses toutes premières publications sur ces questions et jusqu’à récemment, Mario Bunge n’a cessé d’interpeller les philosophes afin qu’ils développent une théorie, au sens propre du terme, de la vérité partielle afin de clarifier les enjeux épistémologiques liés au réalisme scientifique. Bunge a lui-même proposé plusieurs parties de cette théorie au fil des années, mais aucune de ces propositions ne l’a satisfait pleinement et la construction de cette théorie demeure un problème entier. Dans ce texte, nous passerons rapidement en revue certaines des approches proposées par Bunge dans ses publications et nous esquisserons certaines pistes qui devraient servir à tout le moins de desiderata pour la construction d’une théorie de la vérité partielle. (shrink)

Semantic realism can be characterised as the idea that scientific theories are truth-bearers, and that they are true or false in virtue of the world. This notion is often assumed, but rarely discussed in the literature. I examine how it fares in the context of the semantic view of theories and in connection with the literature on scientific representation. Making sense of semantic realism requires specifying the conditions of application of theoretical models, even for models that are not actually used, (...) which leads to several difficulties. My conclusion is that semantic realism is far more demanding than one would expect. Finally, I briefly examine some pragmatist alternatives. (shrink)

Lyons (2016, 2017, 2018) formulates Laudan’s (1981) historical objection to scientific realism as a modus tollens. I present a better formulation of Laudan’s objection, and then argue that Lyons’s formulation is supererogatory. Lyons rejects scientific realism (Putnam, 1975) on the grounds that some successful past theories were (completely) false. I reply that scientific realism is not the categorical hypothesis that all successful scientific theories are (approximately) true, but rather the statistical hypothesis that most successful scientific theories are (approximately) true. Lyons (...) rejects selectivism (Kitcher, 1993; Psillos, 1999) on the grounds that some working assumptions were (completely) false in the history of science. I reply that selectivists would say not that all working assumptions are (approximately) true, but rather that most working assumptions are (approximately) true. (shrink)

In a recent paper, Haig and Borsboom explore the relevance of the theory of truth for psychological science. Although they conclude that correspondence theories of truth are best suited to offer the resources for making sense of scientific practice, they leave open the possibility that other theories might accomplish those same ends. I argue that deflationary theories of truth, which deny that there is any substantive property that unifies the class of truths, makes equally good sense of scientific practice as (...) the correspondence theory, but at lesser theoretical cost. I also argue that the considerations Haig and Borsboom draw on are better thought of as issues relevant to realism, and thus separate from the theory of truth. I conclude that while they are correct to engage questions about what makes true the various claims that arise in psychological research, they may do so without saddling themselves with a correspondence theory. (shrink)

Ian Hacking defines a “style of scientific thinking” loosely as a “way to find things out about the world” characterised by five hallmark features of a number of scientific template styles. Most prominently, these are autonomy and “self-authentication”: a scientific style of thinking, according to Hacking, is not good because it helps us find out the truth in some domain, it itself defines the criteria for truth-telling in its domain. I argue that Renaissance medicine, Mediaeval “demonology”, and magical thinking pass (...) muster as scientific according to Hacking's criteria. However, application of these thought styles to the entities they introduce generates statements that logically imply a set of “ordinary” statements—or what Bernard Williams calls “plain truths”—which, contra the claims of autonomy and self-authentication, allows styles to be assessed from a style- independent perspective. Using Williams’ notion of plain truth, I show that Renaissance medicine, demonology, and magical thinking, in reality issue in many plain falsehoods. This confronts us with what I call Hacking's dilemma: either define stricter necessary conditions on being a style of scientific thinking, or concede that some styles albeit scientific are not as good at finding things out about the world as others. I make three suggestions to deal with the dilemma. (shrink)

Scientists often use aesthetic values in the evaluation and choice of theories. Aesthetic values are not only regarded as leading to practically more useful theories but are often taken to stand in a special epistemic relation to the truth of a theory such that the aesthetic merit of a theory is evidence of its truth. This paper explores what aesthetic considerations influence scientists' reasoning, how such aesthetic values relate to the utility of a scientific theory, and how one can justify (...) the epistemic role for such values. The paper examines ways in which the link between beauty and truth can be defended, the challenges facing such accounts, and explores alternative epistemic roles for aesthetic values in scientific practice. (shrink)

ABSTRACTThis discussion note aims to contribute to the ongoing debate over the nature of scientific progress. I argue against the semantic view of scientific progress, according to which scientific progress consists in approximation to truth or increasing verisimilitude. If the semantic view of scientific progress were correct, then scientists would make scientific progress simply by arbitrarily adding true disjuncts to their hypotheses or theories. Given that it is not the case that scientists could make scientific progress simply by arbitrarily adding (...) true disjuncts to their hypotheses or theories, it follows that the semantic view of scientific progress is incorrect. (shrink)

The discourse on nihilism in the German-speaking world continues to take its orientation primarily from Friedrich Nietzsche’s understanding of nihilism as a historical movement of the decline of values. This means that the aspects of nihilism that are not tied to specific epochs and cultures are not accorded due importance (I). In order to make a reappraisal of nihilism that does justice to these objective contents, I will present a classification of types of nihilism and of arguments that support it. (...) The discussion of the typology of the principal meanings of nihilism points to a loss in relevance of conceptions that take their orientation from Nietzsche (II). The discussion of the arguments testifies to the importance of objective knowledge in the justification of nihilism (III). (shrink)

Im ersten Teil verorte ich den historischen Kontext des Umbruchprozesses der Wissenschaft des 19. Jahrhunderts im Hinblick auf die Physik. Vom Beginn der Neuzeit bis weit ins 20. Jahrhundert hinein war die Physik die Leitwissenschaft in den Naturwissenschaften. Der Wandlungsprozess der auf sie bezogenen Wissenschaftsauffassungen setzt im 19. Jahrhundert bislang unangetastete, von der Antike herrührende Geltungsansprüche außer Kraft. Im zweiten Teil vergleiche ich Nietzsches Charakterisierung der Wissenschaften exemplarisch mit der von Hermann von Helmholtz. Helmholtz kann als ein herausragender Vertreter der (...) Naturforschung des 19. Jahrhunderts angesehen werden. Er entwickelte seine erste bahnbrechende wissenschaftliche Leistung noch ganz im Rahmen einer auf Wahrheit und Einheit fokussierten Wissenschaftsauffassung. Im Verlauf seiner weiteren Arbeiten relativierten sich seine Geltungsansprüche zunehmend. In systematischer Hinsicht näherte sich Helmholtz damit nicht nur der Position an, die Nietzsche immer schon eingenommen hat, sondern er übertraf sie sogar in bestimmter Hinsicht. -/- Im dritten Teil setze ich mich kritisch mit einem Aspekt der Rezeption des historischen Verhältnisses von Nietzsche und Helmholtz auseinander. Helmholtz gehörte zu den wenigen repräsentativen Naturwissenschaftlern, von denen man annimmt, dass ihre Forschungen auf das Denken Nietzsches Einfluss hatten. Bemerkenswerterweise stammen die betreffenden Arbeiten aus der ersten Phase von Helmholtz’ Wissenschaftsauffassung. Während Helmholtz mit seinen Forschungen einen traditionellen Wahrheitsanspruch bestätigt sah, bezog sich Nietzsche auf sie, um sie umgekehrt zur Destruktion dieses Anspruches einzusetzen. Wo der Rezeption diese Konstellation entgangen ist, hat sie dazu beigetragen, die Aktualität von Nietzsches Wissenschaftskritik zu überschätzen. (shrink)

I present a new definition of verisimilitude, framed in terms of causes. Roughly speaking, according to it a scientific model is approximately true if it captures accurately the strengths of the causes present in any given situation. Against much of the literature, I argue that any satisfactory account of verisimilitude must inevitably restrict its judgments to context-specific models rather than general theories. We may still endorse—and only need—a relativized notion of scientific progress, understood now not as global advance but rather (...) as the mastering of particular problems. This also sheds new light on longstanding difficulties surrounding language-dependence and models committed to false ontologies. (shrink)

If the defenders of typical postmodern accounts of science (and their less extreme social-constructivist partners) are at one end of the scale in current philosophy of science, who shall we place at the other end? Old-style metaphysical realists? Neo-neo-positivists? ... Are the choices concerning realist issues as simple as being centered around either, on the one hand, whether it is the way reality is “constructed” in accordance with some contingent language game that determines scientific “truth”; or, on the other hand, (...) whether it is the way things are in an independent reality that makes our theories true or false? If, in terms of realism, “strong” implies “metaphysical” in the traditional sense, and “weak” implies “non-absolutist” or “non-unique”, what – if anything – could realism after Rorty's shattering of the mirror of nature still entail? In accordance with my position as a model-theoretic realist, I shall show in this article the relevance of the assumption of an independent reality for postmodern (philosophy of) science – against Lyotard's dismissal of the necessity of this assumption for science which he interprets as a non-privileged game among many others. I shall imply that science is neither the “child” of positivist philosophy who has outgrown her mother, freeing herself from metaphysics and epistemology, nor is science, at the other end of the scale, foundationless and up for grabs. S. Afr. J. Philos. Vol.22(3) 2003: 220–235. (shrink)

This paper addresses the question of whether it is rational for scientists to pursue the realist aim of truth. The point of departure is a pair of objections to the aim of truth due to the anti-realist author, Larry Laudan: first, it is not rational to pursue an aim such as truth which we cannot know we have reached; second, truth is not a legitimate aim for science because it cannot be shown to be attained. Against Laudan, it is argued (...) not only that it is possible to achieve theoretical knowledge, but that we may have evidence of an indirect, fallible nature that the methods employed in science do indeed lead to the truth. (shrink)

Inwieweit vermag sich der ehemalige explanative Erfolg nicht mehr anerkannter Theorien auf die Geltung derjenigen Teilaussagen, die Nachfolgetheorien übernommen haben, zu stützen? Zur Klärung dieser Fragestellung können die Ergebnisse von Machs Untersuchung zur mechanistischen Auffassung des Energieerhaltungssatzes herangezogen werden. Indem er sich in seiner Kritik an den ontologischen Annahmen des Mechanismus auf die Wissenschaftsgeschichte beruft, steht er einer heutigen realismuskritischen Argumentation nahe. Andererseits mißt er den hypothesenfreien Theoriebestandteilen einen Geltungscharakter zu, der in seinem Wahrheitsanspruch durchaus mit einer heutigen realistischen Behauptung (...) theorieübergreifender Bestände der wissenschaftlichen Erkenntnis vergleichbar ist. Daß Mach mit einer quer zur gegenwärtigen Terminologie liegenden Analyse einen Beitrag zur Entschärfung gegenwärtiger Kontroversen leistet, läßt eine erneute Vergegenwärtigung der Schrift von 1872 und den sich daran anschließenden Überlegungen Machs lohnenswert erscheinen. (shrink)

Die Entwicklung von HeImholtz' Mechanismus ist durch einen Wandel im Geltungsanspruch gekennzeichnet und läßt sich in einer noch sehr groben Übersicht in zwei Perioden einteilen. Auf die erste Periode bis etwa zum Ende der 60er Jahre werde ich im ersten Teil meines Beitrages eingehen. Hier rekonstruiere ich umrißhaft die empiristische Begründung, die Helmholtz für den Wahrheitsanspruch seiner Naturauffassung gegeben hat. Im zweiten Teil werde ich dann die wichtigsten Merkmale der im Verlauf der 70er Jahre hervortretenden Hypothetisierungstendenz charakterisieren. Abschliessend will ich (...) in einem dritten Teil zeigen, wie Helmholtz auf der Grundlage seines gewandelten Wissenschaftsverständnisses das Programm einer mechanistischen Naturerklärung mit großem wirkungsgeschichtlichen Einfluß weiter verfolgt hat. (shrink)

Conference paper presented at the 10th International Congress of Logic, Methodology, and Philosophy of Science, Florence, Italy (19-25 August 1995). Extrapolation here refers to the act of inferring more widely from a limited range of known facts. This notion of extrapolation, especially when applied to past events, has recently been used to formulate a pragmatic definition of truth. This paper shows that this definition has serious problems. The pragmatic definition of truth has been formulated in discussions on internal realism. In (...) this paper, the basic internal realist starting point, as expounded in the works of H. Putnam and N. Jardine, will be taken to be the claim that the distinction between judgements that are true from judgements that are false is explainable from within our judgement-forming faculty — no recourse to the external world is necessary. The paper first shows how the pragmatic definition of truth involves a counterfactual statement. It then describes how the counterfactual definition is apparently justified by an inductive argument. In the final step, this justification is shown to be unsuccessful. (shrink)