This paper analyzes the historical context and systematic importance of Kant's hypothetical use of reason. It does so by investigating the role of hypotheses in Kant's philosophy of science. We first situate Kant’s account of hypotheses in the context of eighteenth-century German philosophy of science, focusing on the works of Wolff, Meier, and Crusius. We contrast different conceptions of hypotheses of these authors and elucidate the different theories of probability informing them. We then adopt a more systematic perspective to discuss (...) Kant's idea that scientific hypotheses must articulate real possibilities. We argue that Kant's views on the intelligibility of scientific hypotheses constitute a valuable perspective on scientific understanding and the constraints it imposes on scientific rationality. (shrink)

In spite of several attempts to explicate the relationship between a scientific hypothesis and evidence, the issue still cries for a satisfactory solution. Logical approaches to confirmation, such as the hypothetico-deductive method and the positive instance account of confirmation, are problematic because of their neglect of the semantic dimension of hypothesis confirmation. Probabilistic accounts of confirmation are no better than logical approaches in this regard. An outstanding probabilistic account of confirmation, the Bayesian approach, for instance, is found to be (...) defective in that it treats evidence as a formal entity and this creates the problem of relevance of evidence to the hypothesis at issue, in addition to the difficulties arising from the subjective interpretation of probabilities. This essay purports to satisfy the need for a successful account of hypothesis confirmation by offering an original formulation based on the notion of instantiation of the relation urged by an hypothesis. (shrink)

This argument map presents Paul Loewi’s crucial experiment in which he showed that neural transmissions of signals are chemical in nature, not electrical, in form of an argumentation. The map can be used in science education to show how the formulation of hypotheses should be related to a corresponding determination of experimental designs.

In spite of several attempts to explicate the relationship between a scientific hypothesis and evidence, the issue still cries for a satisfactory solution. Logical approaches to confirmation, such as the hypothetico-deductive method and the positive instance account of confirmation, are problematic because of their neglect of the semantic dimension of hypothesis confirmation. Probabilistic accounts of confirmation are no better than logical approaches in this regard. An outstanding probabilistic account of confirmation, the Bayesian approach, for instance, is found to be (...) defective in that it treats evidence as a formal entity and this creates the problem of relevance of evidence to the hypothesis at issue, in addition to the difficulties arising from the subjective interpretation of probabilities. This essay purports to satisfy the need for a successful account of hypothesis confirmation by offering an original formulation based on the notion of instantiation of the relation urged by an hypothesis. (shrink)

In my “Creatures of Fiction, Objects of Myth” (2014), I present and defend an argument for thinking that mythical creationism—the view that mythical objects like phlogiston and Vulcan are abstract artifacts—is false. One intriguing sort of objection to my argument has been recently put forth by Zvolenszky (2016); she claims that a crucial premise is seen to be unjustified once one considers the phenomena of inadvertently created abstracta—specifically, inadvertently created fictional characters. I argue here that even if we admit inadvertently (...) created abstracta into our ontology, my argument survives. I ultimately defend a view on which fictional characters (if real) may be countenanced as created abstracta whether purposefully created or not, yet mythical objects are best taken to be discoverable, Platonic abstracta (if real). We can see that such a hybrid ontology is justified once we take proper note of the nature of the sorts of authorial activities involved in fictional storytelling and scientific hypothesizing. (shrink)

The problem of scientific disregard is the problem of accounting for why some putative theories that appear to be well-supported by empirical evidence nevertheless play no role in the scientific enterprise. Laudan and Leplin suggest (and Hoefer and Rosenberg concur) that at least some of these putative theories fail to be genuine theoretical rivals because they lack some non-empirical property of theoreticity. This solution also supports their repudiation of the thesis of underdetermination. I argue that the attempt to (...) provide criteria of theoreticity fails, that there is a Bayesian solution to the problem of scientific disregard that fares better, and that this successful solution supports a distinctively Bayesian version of the underdetermination thesis. (shrink)

The publication in English of Karl R. Popper's The Logic of Scientific Discovery twenty-five years after the appearance of the German original, is an important event. At the time when many philosophers questioned the cognitive value of scientific hypotheses , Popper has shown how to reconcile the free use of bold explanatory hypotheses with an insistence on empirical testing. Many of Popper's views have now been accepted even by most of his earlier opponents, which is no small tribute (...) to a philosopher who had challenged an important current of opinion. But, though the basic aspects of Popper's theory have attracted considerable attention in recent years, some of his finer points have received insufficient discussion. It is hoped that the publication of this important book in English translation will now help to remedy this situation. (shrink)

Adolf Grünbaum has introduced into the literature [4], and several times revised and restated [5] [6], a description of a putative crucial experiment. The outcome of this experiment is supposed to be the conclusive falsification of an hypothesis to the effect that the geometry of a certain region of space, or of a certain surface, is Euclidean. Hereafter, in this paper, I shall refer to this example experiment, in any and all of the different versions of it that Grünbaum has (...) articulated, along with the argumentation with which he has supplemented it, as "Grünbaum's Falsification Example." I will be concerned with all versions of the experiment itself, but only with the most recent supplementary argumentation that Grünbaum has offered, since the ways in which this differs from earlier arguments reflect a taking into account, on Grünbaum's part, of points critics have raised and flaws that they have purported to find in some of those earlier arguments [7-11]. There are three separate important theses against which one or another version of Grünbaum's Falsification Example may be taken to have been directed. Each of these Grünbaum has either explicitly claimed to refute or at least left himself open to the interpretation that he has sought to refute, by means of the example. I propose to try to make clear that none of these three theses is refuted, or even threatened with counterevidence, by Grünbaum's Falsification Example. (shrink)

Lewis S. Feuer shows that the gestation of the hypotheses of original-minded scientists, such as Darwin, Einstein, or Bohr, is in large part a subconscious process. Scientists try to project upon the world structural laws that, beside fitting the given physical realities, will also realize their own emotional longings among alternative worldviews. Repeatedly, too, in examining the standpoints of philosophical figures ranging from Spinoza, Descartes, Kant, and Mill to contemporary figures such as Einstein, Lovejoy, and Hook, Feuer illumines how sociological (...) antipathies project themselves into scientific divergences. Feuer delves into the bearing of emotive beliefs such as pacifism, socialism, anti-Semitism, upon the formation of concurrent worldviews, often fixations of scientific belief, held with the same passion in science as in religion. (shrink)

Most philosophers of science maintain Confirmationism's central tenet, namely, that scientific theories are probabilistically confirmed by experimental successes. Against this dominant conception of experimental science, Popper's well-known, anti-inductivistic Falsificationism has stood, virtually alone, since 1934. Indeed, it is Popper who tells us that it was he who killed Logical Positivism. It is also pretty well-known that Popper blames Wittgenstein for much that is wrong with Logical Positivism, just as he despises Wittgenstein and Wittgensteinian philosophers for abdicating philosophy's true mission. (...) What is not well-known, however, especially because Popper neglected to tell us in 1934, is that Wittgenstein is very much an ally. It was Wittgenstein who rejected induction in the strongest possible terms as early as 1922, and it was Wittgenstein who similarly rejected Confirmationism approximately four years prior to Popper. The aims of this paper are to illuminate the substantial agreements between Popper and Wittgenstein and, by doing so, to clarify their important disagreement regarding the status of “strictly universal,” scientific theories. (shrink)

We evaluate three of Geary's claims, finding that there is little evidence for sex differences in object- vs. person-orientation; sex differences in competition, even if biologically caused, lead to sex differences in mathematics only given a certain style of teaching; and sex differences in mental rotation, though real, are not well explained in a sociobiological framework or by the proximate biological variables assumed by Geary.

Singularity Hypotheses: A Scientific and Philosophical Assessment offers authoritative, jargon-free essays and critical commentaries on accelerating technological progress and the notion of technological singularity. It focuses on conjectures about the intelligence explosion, transhumanism, and whole brain emulation. Recent years have seen a plethora of forecasts about the profound, disruptive impact that is likely to result from further progress in these areas. Many commentators however doubt the scientific rigor of these forecasts, rejecting them as speculative and unfounded. We therefore (...) invited prominent computer scientists, physicists, philosophers, biologists, economists and other thinkers to assess the singularity hypotheses. Their contributions go beyond speculation, providing deep insights into the main issues and a balanced picture of the debate. (shrink)

It is commonly hypothesized that scientists are more likely to engage in data falsification and fabrication when they are subject to pressures to publish, when they are not restrained by forms of social control, when they work in countries lacking policies to tackle scientific misconduct, and when they are male. Evidence to test these hypotheses, however, is inconclusive due to the difficulties of obtaining unbiased data. Here we report a pre-registered test of these four hypotheses, conducted on papers that (...) were identified in a previous study as containing problematic image duplications through a systematic screening of the journal PLoS ONE. Image duplications were classified into three categories based on their complexity, with category 1 being most likely to reflect unintentional error and category 3 being most likely to reflect intentional fabrication. We tested multiple parameters connected to the hypotheses above with a matched-control paradigm, by collecting two controls for each paper containing duplications. Category 1 duplications were mostly not associated with any of the parameters tested, as was predicted based on the assumption that these duplications were mostly not due to misconduct. Categories 2 and 3, however, exhibited numerous statistically significant associations. Results of univariable and multivariable analyses support the hypotheses that academic culture, peer control, cash-based publication incentives and national misconduct policies might affect scientific integrity. No clear support was found for the “pressures to publish” hypothesis. Female authors were found to be equally likely to publish duplicated images compared to males. Country-level parameters generally exhibited stronger effects than individual-level parameters, because developing countries were significantly more likely to produce problematic image duplications. This suggests that promoting good research practices in all countries should be a priority for the international research integrity agenda. (shrink)

Although it is often said that economics is too much like physics, to a physicist economics is not at all like physics. The difference is in the scientific methods of the two fields: theoretical economics uses a top down approach in which hypothesis and mathematical rigor come first and empirical confirmation comes second. Physics, in contrast, embraces the bottom up ‘experimental philosophy’ of Newton, in which ‘hypotheses are inferred from phenomena, and afterward rendered general by induction’. Progress would accelerates (...) if economics were to truly make empirical verification the ultimate arbiter of theories, which would force it to open up to alternative approaches. (shrink)

Machine learning systems have shown great potential for performing or supporting inferential reasoning through analyzing large data sets, thereby potentially facilitating more informed decision-making. However, a hindrance to such use of ML systems is that the predictive models created through ML are often complex, opaque, and poorly understood, even if the programs “learning” the models are simple, transparent, and well understood. ML models become difficult to trust, since lay-people, specialists, and even researchers have difficulties gauging the reasonableness, correctness, and reliability (...) of the inferences performed. In this article, we argue that bridging this gap in the understanding of ML models and their reasonableness requires a focus on developing an improved methodology for their creation. This process has been likened to “alchemy” and criticized for involving a large degree of “black art,” owing to its reliance on poorly understood “best practices”. We soften this critique and argue that the seeming arbitrariness often is the result of a lack of explicit hypothesizing stemming from an empiricist and myopic focus on optimizing for predictive performance rather than from an occult or mystical process. We present some of the problems resulting from the excessive focus on optimizing generalization performance at the cost of hypothesizing about the selection of data and biases. We suggest embedding ML in a general logic of scientific discovery similar to the one presented by Charles Sanders Peirce, and present a recontextualized version of Peirce’s scientific hypothesis adjusted to ML. (shrink)

Dorian Abbot and twenty-eight coauthors from many quarters of science have recently published a spirited defense of a perceived ‘liberal’ scientific meritocratism—roughly the view that rivalrous or excludable goods in the sphere of scientific work should be distributed entirely based on potential recipients’ merits in that sphere. They propose to understand merit in terms of ‘achievements,’ not least in the form of individual academic track records. A closer examination of their argument reveals their implicit reliance on several incompatible (...) conceptions of merit. Moreover, they conspicuously ignore the typical collective nature of academic achievements in modern science. In this paper, I argue that a different version of scientific meritocratism, based on the central theses of standpoint epistemology, represents an attractive compromise between Abbot et al. and anti-meritocratic theories informed by the sociology of science. Ultimately, however, the credentials of this ‘strong scientific meritocratism’ rest on empirical hypotheses which remain underexamined. (shrink)

The meaning of an experimental result depends on the experiment's conceptual backdrop, particularly its null hypothesis. This observation provides the basis for a functional interpretation of belief in the base rate fallacy. On this interpretation, if the base rate fallacy is to be labelled a “myth,” then it should be recognized that this label is not necessarily a disparaging one.

The main purpose of this paper is to investigate and reconstruct the philosophical thoughts in Marian Smoluchowski’s papers. He was an outstanding Polish physicist, who lived at the turn of the XIX and XX century. Smoluchowski was particularly interested in theoretical physics. His achievements in this discipline, some even very significant, have caused him to be perceived mainly as a physicist. His work in the theory of fluctuations and kinetic theory of gases, especially in the theory of Brownian motions, is (...) well known to physicists. My attention in this paper is focused on the metascientific problems which dominated his philosophical reflections. His analysis in the fields on philosophy of science ought to be perceived in light of physics. Philosophical reflections were at the margins of science which he practiced – physics was always the background to his deliberations. An important limit to our deliberations was set by concentrating on issues typical of the philosophy of science. In Smoluchowski’s case, however, it is difficult to say that his branch of philosophy is characterized by systematic reflection. It is difficult to classify his reflection in the framework of any given philosophical trend. (shrink)

We give anecdotal accounts from our own experience of scientific theories which have been generally accepted as the ruling opinion long after sufficient evidence has been collected for their disproof. This has led us to the opinion that the normal scientific process, of working hypothesis followed by experimental test aimed at disproof, is being replaced by the ruling opinion followed by experiment aimed at confirmation. The apparently widespread adoption of this procedure may be postulated to arise in part (...) from the need for workers entering a new field of study to obtain grants and to get their results published. (shrink)

Scientific risk evaluations are constructed by specific evidence, value judgements and biological background assumptions. The latter are the framework-setting suppositions we apply in order to understand some new phenomenon. That background assumptions co-determine choice of methodology, data interpretation, and choice of relevant evidence is an uncontroversial claim in modern basic science. Furthermore, it is commonly accepted that, unless explicated, disagreements in background assumptions can lead to misunderstanding as well as miscommunication. Here, we extend the discussion on background assumptions from (...) basic science to the debate over genetically modified (GM) plants risk assessment. In this realm, while the different political, social and economic values are often mentioned, the identity and role of background assumptions at play are rarely examined. We use an example from the debate over risk assessment of stacked genetically modified plants (GM stacks), obtained by applying conventional breeding techniques to GM plants. There are two main regulatory practices of GM stacks: (i) regulate as conventional hybrids and (ii) regulate as new GM plants. We analyzed eight papers representative of these positions and found that, in all cases, additional premises are needed to reach the stated conclusions. We suggest that these premises play the role of biological background assumptions and argue that the most effective way toward a unified framework for risk analysis and regulation of GM stacks is by explicating and examining the biological background assumptions of each position. Once explicated, it is possible to either evaluate which background assumptions best reflect contemporary biological knowledge, or to apply Douglas' 'inductive risk' argument. (shrink)

The idea that there might be empirical evidence for the existence of God has been largely discredited these days. Even among theists there are many who hold that it is not a fruitful idea and that there is no point in searching for evidence for theistic beliefs. Some who regard themselves as theists go to the extreme of denying that there is any possibility of there being empirical evidence to support a religious world-view since that view implies no factual claim, (...) as it is essentially a commitment to a given set of values and a way of life and not to the existence of any physically real entity. Others are willing to assert that theism implies the belief in some special facts but that these are so far removed from the mundane experiences upon which physical science is based, that the latter could not possibly support such a belief. Yet others merely say that there is no need at all for confirmatory evidence of the kind employed in science since their beliefs are grounded in something much firmer and more immediate, like religious experience. (shrink)

MISS MACDONALD, in an article in the October 1953 issue of Philosophy under the title “Linguistic Philosophy and Perception,” discusses the relationship between this philosophical school and others, by contrasting its treatment of the problem of perception with typical Realist, Dualist and Phenomenalist solutions. Her main point is that the branch of Linguistic philosophy which she represents, which she proposes to call Metaphilosophy, does not take sides on this issue, nor propound a new theory of its own, but stands back (...) and tries to help us to understand the differences separating the various schools by a careful analysis of the language they use. (shrink)

Hypothesizing after the results are known, or HARKing, occurs when researchers check their research results and then add or remove hypotheses on the basis of those results without acknowledging this process in their research report (Kerr, 1998). In the present article, I discuss three forms of HARKing: (1) using current results to construct post hoc hypotheses that are then reported as if they were a priori hypotheses; (2) retrieving hypotheses from a post hoc literature search and reporting them as a (...) priori hypotheses; and (3) failing to report a priori hypotheses that are unsupported by the current results. These three types of HARKing are often characterized as being bad for science and a potential cause of the current replication crisis. In the present article, I use insights from the philosophy of science to present a more nuanced view. Specifically, I identify the conditions under which each of these three types of HARKing is most and least likely to be bad for science. I conclude with a brief discussion about the ethics of each type of HARKing. (shrink)

The intention of the present essay is to urge a reconsideration of the Realism-Phenomenalism-Issue, mainly and primarily in regard to the interpretation of scientific hypotheses; secondarily also relating to the basic problems of epistemology.

Scientific hypotheses may either predict particular unknown facts or accommodate previously-known data. Although affirmed predictions are intuitively more rewarding than accommodations of established facts, opinions divide whether predictive hypotheses are also epistemically superior to accommodation hypotheses. This paper examines the contribution of predictive hypotheses to discoveries of several bio-molecular systems. Having all the necessary elements of the system known beforehand, an abstract predictive hypothesis of semiconservative mode of DNA replication was successfully affirmed. However, in defining the genetic code whose (...) biochemical basis was unclear, hypotheses were only partially effective and supplementary experimentation was required for its conclusive definition. Markedly, hypotheses were entirely inept in predicting workings of complex systems that included unknown elements. Thus, hypotheses did not predict the existence and function of mRNA, the multiple unidentified components of the protein biosynthesis machinery, or the manifold unknown constituents of the ubiquitin–proteasome system of protein breakdown. Consequently, because of their inability to envision unknown entities, predictive hypotheses did not contribute to the elucidation of cation theories remained the sole instrument to explain complex bio-molecular systems, the philosophical question of alleged advantage of predictive over accommodative hypotheses became inconsequential. (shrink)

This paper introduces pragmatic hypotheses and relates this concept to the spiral of scientific evolution. Previous works determined a characterization of logically consistent statistical hypothesis tests and showed that the modal operators obtained from this test can be represented in the hexagon of oppositions. However, despite the importance of precise hypothesis in science, they cannot be accepted by logically consistent tests. Here, we show that this dilemma can be overcome by the use of pragmatic versions of precise hypotheses. These (...) pragmatic versions allow a level of imprecision in the hypothesis that is small relative to other experimental conditions. The introduction of pragmatic hypotheses allows the evolution of scientific theories based on statistical hypothesis testing to be interpreted using the narratological structure of hexagonal spirals, as defined by Pierre Gallais. (shrink)

Background and Objectives: In this research article, the researcher addresses the issue of creating public understanding in a democratic society about the progress of science, with an emphasis on pluralism from philosophers of science. The idea that there is only one truth and that there are just natural laws awaiting discovery by scientists has historically made it difficult to explain scientific progress. This belief motivates science to develop theories that explain the unity of science, and it is thought that (...) diversity in the way different ideas presented by scientists is a problem that results in time being wasted in search of the most accurate theory. Some scientists perceive a benefit in having a range of scientific hypotheses, though. One benefit that is frequently cited is that scientific diversity as a whole contributes to the development of a democratic society that permits the expression of a range of viewpoints. The road to accountable scientific pluralism is fraught with difficulties, though. Therefore, it is crucial to take into account both pluralism's advantages and disadvantages. This research aims at: 1. analyzing in an epistemological way the interpretation of scientific theories and the progress of science from the perspectives of scientific pluralists; 2. analyzing the relationship between science and democracy in explaining scientific significance and progress; and 3. synthesizing new knowledge on epistemic dependentism and to argue that it plays a significant role in evaluating research issues related to scientific pluralism. Methodology: The research methodology involves the application of documentary investigation along with philosophical discourse. The method of philosophical argumentation involves analyzing the lines of arguments found in relevant academic publications in order to assess their validity and soundness. Main Results: One key argument of the pluralists is the use of the concept of theoretical pluralism, which suggests that scientific knowledge is created from a variety of perspectives according to the social and cultural context of knowledge creation. It is found that part of Longino's argument is based on the negation of rational/social dichotomy. Moreover, her theory is a departure from philosopher of science Philip Kitcher, who advocates the creation of scientific knowledge and the evaluation of scientific progress through the means of democratic society. He explains that these procedures will lead to "well-ordered science" in democratic society. Discussions: The researcher examines the underlying ideas accepted by these two philosophers of science and finds that although their opinions differ, they have common ground in the acceptance of consensus. However, the views of both philosophers still lack weight in explaining the knowledge itself. The researcher argues that the acceptance of pluralism as a way of understanding scientific progress necessarily lends itself to dependentism, which points to interdependence in comparisons of superiority/inferiority between scientific theories. It is undeniable that the situation has emerged all the time, even though the success of the scientific theories being compared to each other comes from different social and cultural grounds of thought. Conclusions: Some popular models of scientific pluralism in the philosophy of science still lack a compelling justification, particularly on the epistemic grounds. By elucidating the epistemic significance of the interdependence of these things, scientific pluralism can be strengthened by incorporating the notion of epistemic dependentism into the analysis of scientific progress. (shrink)

En este trabajo se plantea, en primer lugar, la conveniencia de distinguir en el proceso de la contrastación empirica de hipótesis y teorías entre observación cientifíca y percepción y, en segundo lugar, se muestra como el munda procesado a través de la percepción se erige en base o soporte empírico del conocimiento científico. Una de las consecuencias del trabajo es que Ia tesis de “la carga teórica" de Ia observación ha sido mal planteada, al dar par sentado que esa carga (...) teórica afecta tambien al procesamiento perceptivo de los outputs proporeionados al científico por el instrumental de observación.This paper first suggests that, in analyses of the empirical testing of hypotheses and theories, scientific observation should be distinguished from perception; and goes on to say that the world, as processed by perception, is the basis or empirical foundation of scientific knowledge. This thesis that observation is “theory-laden” has been flawed by its being articulated as applying not only to scientific observation but also to the perceptional processing of the output provided to the scientists by observational instruments. (shrink)

We report the results of a study that investigated the views of researchers working in seven scientific disciplines and in history and philosophy of science in regard to four hypothesized dimensions of scientific realism. Among other things, we found that natural scientists tended to express more strongly realist views than social scientists, that history and philosophy of science scholars tended to express more antirealist views than natural scientists, that van Fraassen’s characterization of scientific realism failed to cluster (...) with more standard characterizations, and that those who endorsed the pessimistic induction were no more or less likely to endorse antirealism. (shrink)

On the status of hypotheses in science, and why scientists would be better off asking questions.

Scientific discovery is often regarded as romantic and creative - and hence unanalyzable - whereas the everyday process of verifying discoveries is sober and more suited to analysis. Yet this fascinating exploration of how scientific work proceeds argues that however sudden the moment of discovery may seem, the discovery process can be described and modeled. Using the methods and concepts of contemporary information-processing psychology (or cognitive science) the authors develop a series of artificial-intelligence programs that can simulate the (...) human thought processes used to discover scientific laws. The programs - BACON, DALTON, GLAUBER, and STAHL - are all largely data-driven, that is, when presented with series of chemical or physical measurements they search for uniformities and linking elements, generating and checking hypotheses and creating new concepts as they go along. "Scientific Discovery examines the nature of scientific research and reviews the arguments for and against a normative theory of discovery; describes the evolution of the BACON programs, which discover quantitative empirical laws and invent new concepts; presents programs that discover laws in qualitative and quantitative data; and ties the results together, suggesting how a combined and extended program might find research problems, invent new instruments, and invent appropriate problem representations. Numerous prominent historical examples of discoveries from physics and chemistry are used as tests for the programs and anchor the discussion concretely in the history of science. Pat Langley is an Associate Professor in the Department of Information and Computer Science at the University of California, Irvine.Herbert Simon is a Professor in the Departments of Psychology, Computer Science, and Philosophy at Carnegie-Mellon University. Gary L. Bradshaw is an Assistant Professor in the Department of Psychology and Institute of Cognitive Science at the University of Colorado, Boulder. Jan M. Zytkow is an Associate Professor in the Computer Science Department at Wichita State University. (shrink)

UNDERSTANDING SCIENTIFIC REASONING develops critical reasoning skills and guides students in the improvement of their scientific and technological literacy. The authors teach students how to understand and critically evaluate the scientific information they encounter in both textbooks and the popular media. With its focus on scientific pedagogy, UNDERSTANDING SCIENTIFIC REASONING helps students learn how to examine scientific reports with a reasonable degree of sophistication. The book also explains how to reason through case studies using (...) the same informal logic skills employed by scientists and to analyze a complex series of propositions and hypotheses using sound scientific reasoning. (shrink)

Frente a la tesis de la "carga teórica", se muestra como en el proceso de contrastación de hipótesis y teorías es conveniente distinguir entre observación científica y percepción y, luego, se defiende que en los procesos de percepción no están implicados los conceptos teóricos de la ciencia sino conceptos de otro nivel, los que toman cuerpo en la codificación de la estimulación sensorial procedente de los ítems identificados perceptivamente. De donde se sigue que el mundo identificado a través de los (...) procesos de percepción es la base o soporte empírico del conocimiento científico. (shrink)

This article thinks about changes in the conception of hypothesis during the early modern period. It explains that during this period there was an urgency to redefine human knowledge so that uncertainty became one of its inevitable and acceptable features, and certainty was replaced by probability as an adequate achievement in knowledge of the natural world. It discusses Isaac Newton's deep-seated rejection of hypotheses and the assumption that their use in natural philosophy would compromise its status as genuine scientific (...) knowledge. (shrink)

Epistemic accounts of scientific collaboration usually assume that, one way or another, two heads really are more than twice better than one. We show that this hypothesis is unduly strong. We present a deliberately crude model with unfavorable hypotheses. We show that, even then, when the priority rule is applied, large differences in successfulness can emerge from small differences in efficiency, with sometimes increasing marginal returns. We emphasize that success is sensitive to the structure of competing communities. Our results (...) suggest that purely epistemic explanations of the efficiency of collaborations are less plausible but have much more powerful socioepistemic versions. (shrink)

The production of evidence for scientific hypotheses and theories often depends upon complex instruments and techniques for employing them. An important epistemological question arises as to how the reliability of these instruments and techniques is assessed. To address that question, this paper examines the introduction of electron microscopy and cell fractionation in cell biology. One important claim is that scientists often arrive at their techniques for employing instruments like the electron microscope and the ultracentrifuge by tinkering and that they (...) evaluate the resulting techniques in part by whether they produce plausible data given developing theories. (shrink)

_ Source: _Volume 7, Issue 2, pp 69 - 90 It is often claimed that, as a result of scientific progress, we now _know_ that the natural world displays no design. Although we have no interest in defending design hypotheses, we will argue that establishing claims to the effect that we know the denials of design hypotheses is more difficult than it seems. We do so by issuing two skeptical challenges to design-deniers. The first challenge draws inspiration from radical (...) skepticism and shows how design claims are at least as compelling as radical skeptical scenarios in undermining knowledge claims, and in fact probably more so. The second challenge takes its cue from skeptical theism and shows how we are typically not in an epistemic position to rule out design. (shrink)

Assuming for the sake of discussion that there is an external world, The "core" thesis of scientific realism is that some of our empirical beliefs (including the so-Called theoretical beliefs) succeed in correctly describing, In some important measure, The external world. Classical scientific realism also asserts that we are able to say justifiably just "which" of our beliefs so succeed in correctly describing the external world. This paper does not examine this last claim. Rather it seeks to defend (...) the core thesis of scientific realism and will assume (for reasons of limited space) the existence of an external world. In defending the core thesis, This paper returns to and defends the explanationist defense which asserts that the core thesis offers the best available explanation for the long-Term predictive success of "some" empirical or scientific hypotheses. The defense consists in examining and rejecting all available alternative explanations as well as all objections to the explanationist defense as offered in this paper. (shrink)