Critiques of case studies as an epistemic genre usually focus on the domain of justification and hinge on comparisons with statistics and laboratory experiments. In this domain, case studies can be defended by the notion of “infirming”: they use many different bits of evidence, each of which may independently “infirm” the account. Yet their efficacy may be more powerful in the domain of discovery, in which these same different bits of evi- dence must be fully integrated to create an explanatory (...) account with internal validity. (shrink)

This paper is a preliminary exploration of the connections between the statistical style of reasoning and the research practices of statistical mechanics in the early period of the long quantum revolution. It suggests that before 1925 the instantiations of the statistical style in physics went through two phases. The first phase consisted of the formulation of the Maxwell‐Boltzmann statistics on the basis of the population‐gas analogy. The second phase was characterized by the generalization of the Maxwell‐Boltzmann statistics through analogies between (...) ideal gas molecules and other microphysical entities, analogies that shaped and were shaped by the rise of quantum theory. Einstein's invention of the Bose‐Einstein statistics started a third phase and created the conditions of possibility for a new classification of microphysical entities according to their different statistics. (shrink)

A strong case has been made for the role and value of mechanistic reasoning in process-oriented sciences, such as molecular biology and neuroscience. This paper shifts focus to assess the role of mechanistic reasoning in an area where it is neither obvious nor expected: population genetics. Population geneticists abstract away from the causal-mechanical details of individual organisms and, instead, use mathematics to describe population-level, statistical phenomena. This paper, first, develops a framework for the identification of mechanistic reasoning where it is (...) not obvious: mathematical and mechanistic styles of scientific reasoning. Second, it applies this framework to demonstrate that both styles are integrated in modern investigations of evolutionary biology. Characteristic of the former, applied population genetic techniques provide statistical evidence for associations between genotype, phenotype, and fitness. Characteristic of the latter, experimental interventions provide causal-mechanical evidence for associations between the very same relationships, often in the same model organisms. The upshot is a richer perspective of how evolutionary biologists build evidence for hypotheses regarding adaptive evolution and a general framework for assessing the scope of mechanistic reasoning across the sciences. (shrink)

En el artículo planteamos una categoría para el estudio de controversias científicas, controversias sobre estilos, y proponemos una herramienta de análisis para dar cuenta de ellas. Para ello, hacemos uso de la noción de estilo de razonamiento de Ian Hacking y la metáfora de una historia por estratos. Mostraremos que las controversias sobre estilos tienen la particularidad de persistir en el tiempo, evolucionar e involucrar discusiones y debates en múltiples niveles. Para ilustrar nuestra propuesta, presentamos la controversia cuántica como un (...) ejemplo de una controversia sobre estilos y hacemos uso de la herramienta que aquí sugerimos. (shrink)

During the first half of the nineteenth century, mathematical analysis underwent a transition from a predominantly formula-centred practice to a more concept-centred one. Central to this development was the reorientation of analysis originating in Augustin-Louis Cauchy's (1789–1857) treatment of infinite series in his Cours d’analyse. In this work, Cauchy set out to rigorize analysis, thereby critically examining and reproving central analytical results. One of Cauchy's first and most ardent followers was the Norwegian Niels Henrik Abel (1802–1829) who vowed to shed (...) some light on the vast darkness in analysis.This paper investigates some important aspects of Abel's contribution to the reorientation in analysis. In particular, it stresses the role for critical revision in the process of rigorization. By critically examining past practice, the new practice sought to explain the relative success of the previous—now outdated—approach. This is illustrated by discussing a number of issues related to Abel's new proof of the binomial theorem (1826) including his reactions to the exception that he encountered to one of the central theorems of Cauchy's theory.Following this discussion, the formation of new concepts as the result of critical revisions is illustrated by analysing the early history of the concept of absolute convergence. Thereby, it is shown how a new concept was distilled, investigated, put to use and eventually superseded. (shrink)

ABSTRACTThis article, which summarises some of the main arguments of Analogical Investigations [Lloyd 2015], undertakes a comparative cross-cultural critique of the dominant Western view that downgrades analogy especially when that is contrasted unfavourably with a notion of axiomatic-deductive demonstration aiming to secure incontrovertible conclusions. It draws on materials from ancient Greece, ancient China and modern social anthropology and philosophy of science to explore the problems of translation and mutual intelligibility. It develops the idea of semantic stretch to qualify the literal/metaphorical (...) dichotomy and the notion of the multidimensionality of reality to clarify aspects of the controversy between realism and relativism. (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)

The kind of epistemic relativism usually refuted by its critics is less frequently observable in ethnographic research practices than the critics assume. Instead, methodological conceptual relativism can be recognized in several cases. This has significant practical implications, since the kind of epistemic relativism described by its critics, if rigorously followed, could lead to ethnographers conflating ways of argumentation accepted by their informants, with ways of argumentation accepted in academia, whereas methodological conceptual relativism does not have such consequences.

ArgumentThe article retraces the shifting conceptualizations of psychological trauma in experimental psychopathological research in the middle decades of the twentieth century in the United States. Among researchers studying so-called experimental neuroses in animal laboratories, trauma was an often-invoked category used to denote the clash of conflicting forces believed to lead to neurotic suffering. Experimental psychologists, however, soon grew skeptical of the traumatogenic model and ultimately came to reject neurosis as a disease entity. Both theoretical differences and practical circumstances, such as (...) the technical challenge of stabilizing neurotic symptoms in rats, led to this demise. Yet, despite their reservations, experimental psychologists continued to employ traumatic stimuli to produce psychopathological syndromes. In the 1960s, a new understanding of trauma evolved, which emphasized the loss of control experienced by traumatized animal subjects. These shifting ideas about trauma, I argue, reflect both varying experimental cultures, epistemic norms as well as changing societal concerns. (shrink)

The paper examines differences of styles of experimentation in the history of science. It presents arguments for a historization of our historial and philosophical notion of "experimentation," which question the common view that "experimental philosophy" was the only style of experimentation in the eighteenth and early nineteenth centuries. It argues, in particular, that "experimental history" and technological inquiry were accepted styles of academic experimentation at the time. These arguments are corroborated by a careful analysis of a case study, which is (...) embedded in a comparative historical overview. (shrink)

Ian Hacking urged that philosophers take a look at history. He called his recommendation the “Lockean imperative”. In the present paper I examine how Hacking understands the relation between philosophy and history by concentrating on his 1990 essay “Two kinds of ‘New Historicism’ for philosophers”. In this particular paper Hacking uses the visual metaphor of ‘taking a look’ which can also be found in the work of two other philosophers, Kuhn and Foucault, who are called by Hacking his mentors. I (...) argue that in the work of these three philosophers, as well as in the work of Wittgenstein who has influenced both Hacking and Kuhn, one can find interest and attention to particulars which can be furnished by history, an approach which cultivates a sensibility for difference. I begin by presenting Hacking’s understanding of the relation of history to philosophy and then discuss what the Lockean imperative is. I concentrate on Locke’s understanding of history which differs considerably from the contemporary and end by focusing on the similarities in the work of the aforementioned thinkers. (shrink)

Social studies of science have often treated natural field sites as extensions of the laboratory. But this overlooks the unique specificities of field sites. While lab sites are usually private spaces with carefully controlled borders, field sites are more typically public spaces with fluid boundaries and diverse inhabitants. Field scientists must therefore often adapt their work to the demands and interests of local agents. I propose to address the difference between lab and field in sociological terms, as a difference in (...) style. A field style treats epistemic alterity as a resource rather than an obstacle for objective knowledge production. A sociological stylistics of the field should thus explain how objective science can co-exist with radical conceptual difference. I discuss examples from the Canadian North, focussing on collaborations between state wildlife biologists and managers, on the one hand, and local Aboriginal Elders and hunters, on the other. I argue that a sociological stylistics of the field can help us to better understand how radically diverse agents may collaborate across cultures in the successful production of reliable natural knowledge. (shrink)

ArgumentAccording to a long-standing interpretation which traces back to Max Jammer'sConcepts of Force(1957), Ruggiero G. Boscovich would have developed a concept of force in the tradition of Leibniz's dynamics. In his variation on the theme, basic properties of matter such as solidity or impenetrability would be derived from an interplay of some “active” force of attraction and repulsion that any primary element of nature (“point of matter” in Boscovich's theory) would possess. In the present paper I discuss many flaws of (...) this interpretation and argue for an alternative point of view, according to which the crucial aspect in the development of Boscovich's natural philosophy is his early definition of forces as “mathematical determinations” to have a certain state of motion. This is consistent with a Newtonian background and has as its epistemological consequence a certain agnosticism about the nature of forces and a “mathematical neutralism” (mathematics as a neutral tool, allowing for a plurality of interpretations). (shrink)

During the second half of the 19th century, in the field of physiological optics, there was a strong controversy between Hermann von Helmholtz and Ewald Hering. This controversy has been usually characterized as “empiricism” vs. “nativism”. In the field of physiology of visual perception, several subjects demanded attention, among them, color vision. Helmholtz and Hering suggested different theories for the physiological correlate of color sensation and different color spaces to give an account of the relationships between colors. In this article, (...) I will argue that the controversy between the two authors could be understood as differences between styles of reasoning, and these different styles express different presuppositions. More specifically, I want to suggest that the disagreements could be linked to the discussions on how vital phenomena should be studied. (shrink)

In a 2020 paper, 37 authors, all researchers and students in aging biology, pointed out a general lack of consensus in their field, “even on the most fundamental questions”. They evoked a “problem”, for which a solution has yet to be found. But what exactly does this lack of consensus specifically refer to and why should it be inherently problematic? Here, I would like to explore three distinct philosophical reactions when dealing with this issue. First, I will assess the extent (...) to which this lack of consensus can be taken as evidence that science, in a sense, needs philosophy. Then, I will examine how it may be related to the particular nature of the aging phenomenon, which both science and philosophy can help describe and understand. Finally, I will show that this lack of consensus could also be considered, not as a problem, but as an opportunity to question the role of pluralism and the importance of ambiguity in science in general, and in aging biology in particular. (shrink)

ArgumentUsing the notion of styles of knowledge we refer to the ways diverse scientific communities claim to produce true knowledge, their understandings regarding the attitudes and values that scientists should have in order to grasp natural and social reality, and the practices and technologies developed within such styles. This paper analyzes scientific and medical enterprises that explored the relationship between environment, population, and society in Colombia between 1850 and 1920. We argue that similar styles of knowledge production were shared in (...) human geography, medical geography, and climatic physiology at the mid-nineteenth century; and that some physicians working in bacteriology and physiology since the 1880s established epistemic boundaries between their work and earlier scientific activities, while others found these distinctions irrelevant. However, the historical actors committed to any of the styles of knowledge production explored in this article agreed on the local specificity of their objects of inquiry, therefore questioning European science. These styles of knowledge production also shaped different ways of perceiving and addressing national problems. Hence, this article is a contribution to the recent literature on both historical epistemology and social and cultural history of science and medicine. (shrink)

This paper focuses on the consolidation of Molecular Evolution, a field originating in the 1960s at the interface of molecular biology, biochemistry, evolutionary biology, biophysics and studies on the origin of life and exobiology. The claim is made that Molecular Evolution became a discipline by integrating different sorts of scientific traditions: experimental, theoretical and comparative. The author critically incorporates Timothy Lenoir’s treatment of disciplines , as well as ideas developed by Stephen Toulmin on the same subject. On their account disciplines (...) are spaces where the social and epistemic dimensions of science are deeply and complexly interwoven. However, a more detailed account of discipline formation and the dynamics of an emerging disciplinary field is lacking in their analysis. The present essay suggests focusing on the role of scientific concepts in the double configuration of disciplines: the social/political and the epistemic order. In the case of Molecular Evolution the concepts of molecular clock and informational molecules played a central role, both in differentiating molecular from classical evolutionists, and in promoting communication between the different sorts of traditions integrated in Molecular Evolution. The paper finishes with a reflection on the historicity of disciplines, and the historicity of our concepts of disciplines. (shrink)

After a brief presentation of Feynman diagrams, we criticizise the idea that Feynman diagrams can be considered to be pictures or depictions of actual physical processes. We then show that the best interpretation of the role they play in quantum field theory and quantum electrodynamics is captured by Hughes' Denotation, Deduction and Interpretation theory of models, where “models” are to be interpreted as inferential, non-representational devices constructed in given social contexts by the community of physicists.

In this paper, I present the problem of scientific change as an explanatory problem, that is, as a philosophical problem concerning what logical forms of explanation we should employ in order to un...

PurposeIn this article, we aim to present and defend a contextual approach to mathematical explanation.MethodTo do this, we introduce an epistemic reading of mathematical explanation.ResultsThe epistemic reading not only clarifies the link between mathematical explanation and mathematical understanding, but also allows us to explicate some contextual factors governing explanation. We then show how several accounts of mathematical explanation can be read in this approach.ConclusionThe contextual approach defended here clears up the notion of explanation and pushes us towards a pluralist vision (...) on mathematical explanation. (shrink)

We examine the most famous controversy between economists as a means of shedding fresh light on the current debate about economic methodology. By focusing on the controversy as the primary unit of analysis, we show how methodological considerations are but one of a whole set of stratagems strategically employed by each opponent. We argue that each opponent's preference for a particular kind of stratagems expresses his own specific scientific style (within the general scientific and cultural style of an age). We (...) also describe a dynamic dimension of the controversy, independent of the participants' intentions. Such a dimension is analysed in a "cycle" of the controversy, which begins with a well-defined issue and expands to additional topics, without reaching a "solution" to the initial issue. The definition and re-definition of the issue(s) at stake and of the difference between both participants is an essential and recurrent feature of such cycles; the conclusion of a cycle does not imply a real "closure" of the controversy, but only that each opponent has reached a satisfying degree of self-clarification. The controversy, thus, does not yield persuasion -- its ostensible aim. Rather, its "benefit" seems to lie in an unintended result -- clarification and deepening of contrasting approaches to the discipline -- due to its peculiar dynamics. In so far as the history of a discipline requires a reconstruction of such contrasts, it is indispensable for it to take into account the controversies where they emerge, and to view both the positive doctrines and the methodological posture of the contenders as parts of a wider framework, that is a scientific style. (shrink)

Historians and philosophers of science have furnished a wide array of theoretical-historiographical terms to emphasize the discontinuities among different systems of knowledge. Some of the most famous include Thomas Kuhn’s “paradigm”, Michel Foucault’s “episteme”, and the notion of “styles of reasoning” more recently developed by Ian Hacking and Arnold Davidson. This paper takes up this theoretical-historiographical thread by assessing the values and limitations of the notion of “style” for the historical and philosophical study of science. Specifically, reflecting on various methodological (...) and theoretical concerns prompted by sexuality, translation, and East Asian studies, this paper argues that the heretofore ways in which historians and philosophers of science have used the notion of “style” are severely restricted in terms of its mere applicability to the intellectual history of Western science. The particular example of the translation of “homosexuality” into Chinese during the May Fourth era reveals that the notion of “style” has the potential of carrying a much more dynamic conceptual weight, as when used in “styles of argumentation”. The paper also engages briefly with the historiography of scientific “national styles” and ends with some concluding remarks on the limitations of “social histories from below” and the under appreciated importance of “epistemological histories of possibilities”. (shrink)

In diesem Beitrag lege ich dar, dass in der zweiten Hälfte des 20. Jahrhunderts das Konzept von Werkstoffen (materials) als charakteristischer ontologischer Typus eines neuen Forschungs- und Wissenschaftsstils aufkam. Das soll nicht heißen, dass Werkstoffe niemals zuvor wissenschaftlich bearbeitet worden wären. Zweifellos hatten sich zahlreiche wissenschaftliche Disziplinen mit den Eigenschaften einer ganzen Reihe von Werkstoffen befasst. Doch wurden dabei Werkstoffe nicht als generische, also alle Arten von Stoffen umfassende, Entität betrachtet.Ziel dieses Aufsatzes ist zu verstehen, wie Werkstoffe als Gattungseinheit entstanden (...) sind und zu Objekten einer Wissenschaft wurden, die so unterschiedliche Dinge wie Papier, Holz, Metalle, Beton, Keramik, Polymere, Halbleiter und Kohlenstoff-Nanoröhren umfasst. Im Bemühen, die historischen Begleitumstände des Auftretens von Werkstoffen zu bestimmen, werde ich diese zunächst in historischer und ontologischer Hinsicht einordnen. Wie war es möglich, all diese Dinge in einer einzigen Gattung zu vereinigen? Dann wende ich mich dem sich verändernden Status von Werkstoffen zu, ein Resultat der erfolgreichen Materialforschung. Werkstoffe sind nicht länger die Vorbedingungen, die dem Entwurfsprozess Beschränkungen auferlegen, sondern werden nun selbst spezifisch entworfen. Solche materials by design sind echte, individuell zugeschnittene Schöpfungen und nicht nur einfach Handelsprodukte. Zudem birgt der Wandel ihres ontologischer Status ein Paradox mit seiner Tendenz zur Entmaterialisierung von Technik. (shrink)

In diesem Beitrag lege ich dar, dass in der zweiten Hälfte des 20. Jahrhunderts das Konzept von Werkstoffen (materials) als charakteristischer ontologischer Typus eines neuen Forschungs- und Wissenschaftsstils aufkam. Das soll nicht heißen, dass Werkstoffe niemals zuvor wissenschaftlich bearbeitet worden wären. Zweifellos hatten sich zahlreiche wissenschaftliche Disziplinen mit den Eigenschaften einer ganzen Reihe von Werkstoffen befasst. Doch wurden dabei Werkstoffe nicht als generische, also alle Arten von Stoffen umfassende, Entität betrachtet.Ziel dieses Aufsatzes ist zu verstehen, wie Werkstoffe als Gattungseinheit entstanden (...) sind und zu Objekten einer Wissenschaft wurden, die so unterschiedliche Dinge wie Papier, Holz, Metalle, Beton, Keramik, Polymere, Halbleiter und Kohlenstoff-Nanoröhren umfasst. Im Bemühen, die historischen Begleitumstände des Auftretens von Werkstoffen zu bestimmen, werde ich diese zunächst in historischer und ontologischer Hinsicht einordnen. Wie war es möglich, all diese Dinge in einer einzigen Gattung zu vereinigen? Dann wende ich mich dem sich verändernden Status von Werkstoffen zu, ein Resultat der erfolgreichen Materialforschung. Werkstoffe sind nicht länger die Vorbedingungen, die dem Entwurfsprozess Beschränkungen auferlegen, sondern werden nun selbst spezifisch entworfen. Solche materials by design sind echte, individuell zugeschnittene Schöpfungen und nicht nur einfach Handelsprodukte. Zudem birgt der Wandel ihres ontologischer Status ein Paradox mit seiner Tendenz zur Entmaterialisierung von Technik. (shrink)

This article argues that the limited influence of Ludwik Fleck's ideas on philosophy of science is due not only to their indirect dissemination by way of Thomas Kuhn, but also to an incommensurability between the standard conceptual framework of history and philosophy of science and Fleck's own more integratedly historico-social and praxis-oriented approach to understanding the evolution of scientific discovery. What Kuhn named "paradigm" offers a periphrastic rendering or oblique translation of Fleck's Denkstil/Denkkollektiv , a derivation that may also account (...) for the lability of the term "paradigm". This was due not to Kuhn's unwillingness to credit Fleck but rather to the cold war political circumstances surrounding the writing of The Structure of Scientific Revolutions . Following a discussion of Fleck's anatomical allusions, I include a brief discussion of Aristotle (on menstruation and darkened mirrors) and conclude with a reference to the productivity of error in Mach and Nietzsche. (shrink)

Philosophical treatments of scientific controversies usually focus on theory, excluding important practice related aspects. However, scientists in conflict often appeal to extra-theoretical and extra-empirical elements. To understand better the role that non-empirical elements play in scientific controversies, we introduce the notion of borrowed epistemic credibility, illustrating our proposal with a recent controversy in a field of evolutionary biology known as phylogeography. Our analysis shows how scientific controversies that spring from disagreements about methodological issues potentially involve deeper debates regarding what constitutes (...) good science, prompting the re-examination of more general issues, such as the nature of inference, rationality, and objectivity. (shrink)

Although there is increasing recognition that theory and practice in science are often inseparably intertwined, discussions of scientific controversies often continue to focus on theory, and not practice or methodologies. As a contribution to constructing a framework towards understanding controversies linked to scientific practices, we introduce the notion of borrowed epistemic credibility, to describe the situation in which scientists exploit fallacious similarities between accepted tenets in other fields to garner support for a given position in their own field. Our proposal (...) is based on the analysis of a recent controversy in phylogeography, a biological subdiscipline concerned with the study of the historical causes of variation in genetic diversity within species in concrete biogeographical locations. Through a review of the arguments that support the two conflicting phylogeographic schools, we show that ‘theory’ plays essentially no role as a foundation of the controversy, whereas both sides borrow epistemic credibility from sources such as formal logic, similarity of results to those in other scientific areas, the authority of prominent scientists, or the presumed superiority of quantitative vs. verbal reasoning. Our case study underscores the indivisibility of theory and practice and provide a means to re-examine important philosophical issues such as the meaning of inference, rationality, justification, and objectivity in scientific practice. (shrink)

This book contains a selection of the papers presented at the Logic, Reasoning and Rationality 2010 conference in Ghent. The conference aimed at stimulating the use of formal frameworks to explicate concrete cases of human reasoning, and conversely, to challenge scholars in formal studies by presenting them with interesting new cases of actual reasoning. According to the members of the Wiener Kreis, there was a strong connection between logic, reasoning, and rationality and that human reasoning is rational in so far (...) as it is based on logic. Later, this belief came under attack and logic was deemed inadequate to explicate actual cases of human reasoning. Today, there is a growing interest in reconnecting logic, reasoning and rationality. A central motor for this change was the development of non-classical logics and non-classical formal frameworks. The book contains contributions in various non-classical formal frameworks, case studies that enhance our apprehension of concrete reasoning patterns, and studies of the philosophical implications for our understanding of the notions of rationality. (shrink)

According to the received translational interpretation of incommensurability, incommensurability is viewed as untranslatability due to radical variance of meaning or reference of the terms in two competing scientific languages. The author argues that the translational approach to incommensurability does not effectively clarify the concept of incommensurability. Since it cannot provide us with tenable, integrated concept of incommensurability, it should be rejected.

Traditional Chinese Medicine has been criticized for being unscientific because the theory on which it is based involves entities like qi and ’meridians’ that appear ambiguous and because the internal ‘organs’ like the kidney and the spleen are very different from those of modern anatomy and physiology. Even more so, TCM methods of therapy based on the yin-yang principle, the model of the five elements, and the classification of illnesses according to standard constellations of symptoms are largely unproven by the (...) protocols of modern evidence-based medicine. This dissertation attempts to reconstruct TCM theory by: providing explanations of TCM entities as abstractions and constructs that relate to observable body functions and illness symptoms and interpreting TCM theory as comprising heuristic models that were constructed from clinical experience to fit empirical observations of illnesses and their treatments with herbal medications and acupuncture. It suggests that scientists should be less concerned with the ontological status of TCM entities and the epistemic credentials of TCM models than with the ability of these concepts and models to guide physicians in therapy. More importantly, it makes the argument that these models are testable using the methods of evidence-based medicine. There are methodological difficulties associated with randomized controlled trials partly because TCM treatments tend to be individualized and syndromes are dynamic in nature; observational trials may be more appropriate in some situations. It is also possible that, for patients who are more culturally attuned to TCM, the placebo effect is strongly at play and may render the real effects of TCM treatments harder to tease out in clinical trials. The dissertation concludes that the main postulates of TCM should be put to rigorous test. The result may be a leaner but more robust theory, with parts that do not stand up to the test being rejected or modified, and a possible acceptance of its more modest therapeutic claims for a limited range of pathological conditions like pain and chronic illnesses. (shrink)

On July 14, 1866 Franz Brentano stepped up to the pulpit to defend his thesis that “the true method of philosophy is none other than that of the natural sciences”. This thesis bound his first students to him and became the north star of his school, against the complex background of the progress and specialization of the natural sciences as well as the growth and professionalization of universities. I will discuss the project of the renewal of philosophy as science in (...) the School of Brentano and how this aimed to provide a scientific foundation for the humanities independently from the natural sciences, while preserving the unity of science. Through his well-known re-introduction of the concept of intentionality as criterion to distinguish internal and external perception, Brentano was able to supply an empirical foundation for the Geisteswissenschaften. While philosophy would use the method of natural science, its domain would not be nature, but consciousness: a full-blooded science of the mind that did not require a reduction to the physical in order to be scientific. Brentano’s science of consciousness was empirical, but not experimental, and relied on subjective methods, but was not introspective. Brentano’s students Carl Stumpf, Anton Marty, Alexius Meinong, Christian von Ehrenfels, Edmund Husserl and others came to occupy important chairs in philosophy throughout Europe. While they were certainly not all orthodox followers, they adapted and spread his theories far and wide in the schools and movements they founded and influenced: Gestalt psychology, Prague linguistics, phenomenology, etc.. Moreover, the 19th century idea of scientific research as a collaborative and collective achievement led to a division of labor in Brentano’s school. Each of his students was meant to work out a part of the greater whole: Stumpf, the philosophy of sound and music; Marty, language; Meinong the history of philosophy; Husserl, mathematics; etc. Yet all of them also contributed to the shared project of the renewal of philosophy as science and discussed the (foundational) relation of philosophy to other sciences in programmatic works. Though often forgotten and overlooked due to contingent historical circumstances, the scientific paradigm of the School of Brentano was very fruitful and highly influential in philosophy and the human sciences in general, throughout the second half of the 19th and into the 20th centuries. Yet it is relevant then as now to preserve the independent scientific dignity of the humanities. (shrink)