What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? Neuroconstructivism is a pioneering 2 volume work that sets out a whole new framework for considering the complex topic of development, integrating data from cognitive studies, computational work, and neuroimaging.

In this response, we consider four main issues arising from the commentaries to the target article. These include further details of the theory of interactive specialization, the relationship between neuroconstructivism and selectionism, the implications of neuroconstructivism for the notion of representation, and the role of genetics in theories of development. We conclude by stressing the importance of multidisciplinary approaches in the future study of cognitive development and by identifying the directions in which neuroconstructivism can expand in the Twenty-first Century.

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? Neuroconstructivism is a pioneering 2 volume work that sets out a whole new framework for considering the complex topic of development, integrating data from cognitive studies, computational work, and neuroimaging.

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? The processes that occur along the way are so complex that any attempt to understand development necessitates a multi-disciplinary approach, integrating data from cognitive studies, computational work, and neuroimaging - an approach till now seldom taken in the study of child development. Neuroconstructivism is a major new 2 volume publication that seeks to redress this balance, presenting an integrative new framework for (...) considering development. In the first volume, the authors review up-to-to date findings from neurobiology, brain imaging, child development, computer and robotic modelling to consider why children's thinking develops the way it does. They propose a new synthesis of development that is based on 5 key principles found to operate at many levels of descriptions. They use these principles to explain what causes a number of key developmental phenomena, including infants' interacting with objects, early social cognitive interactions, and the causes of dyslexia. The "neuroconstructivist" framework also shows how developmental disorders do not arise from selective damage to the normal cognitive system, but instead arise from developmental processes that operate under atypical constraints. How these principles work is illustrated in several case studies ranging from perceptual to social and reading development. Finally, the authors use neuroimaging, behavioural analyses, computational simulations and robotic models to provide a way of understanding the mechanisms and processes that cause development to occur. (shrink)

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? The processes that occur along the way are so complex that any attempt to understand development necessitates a multi-disciplinary approach, integrating data from cognitive studies, computational work, and neuroimaging - an approach till now seldom taken in the study of child development. Neuroconstructivism is a major new 2 volume publication that seeks to redress this balance, presenting an integrative new framework for (...) considering development. In the first volume, the authors review up-to-to date findings from neurobiology, brain imaging, child development, computer and robotic modelling to consider why children's thinking develops the way it does. They propose a new synthesis of development that is based on 5 key principles found to operate at many levels of descriptions. They use these principles to explain what causes a number of key developmental phenomena, including infants' interacting with objects, early social cognitive interactions, and the causes of dyslexia. The "neuroconstructivist" framework also shows how developmental disorders do not arise from selective damage to normal cognitive systems, but instead arise from developmental processes that operate under atypical constraints. How these principles work is illustrated in several case studies ranging from perceptual to social and reading development. Finally, the authors use neuroimaging, behavioural analyses, computational simulations and robotic models to provide a way of understanding the mechanisms and processes that cause development to occur. Computer and robotic models provide concrete tools for investigating the processes and mechanisms involved in learning and development. Volume 2 illustrates the principles of 'Neuroconstructivist' development, with contributions from 9 different labs across the world. Each of the contributions illustrates how models play a central role in understanding development. The models presented include standard connectionist neural network models as well as multi-agent models. Also included are robotic models emphasizing the need to take embodiment and brain-system interactions seriously. A model of Autism and one of Specific Language Impairment also illustrate how atypical development can be understood in terms of the typical processes of development but operating under restricted conditions. This volume complements Volume 1 by providing concrete examples of how the 'Neuroconstructivist' principles can be grounded within a diverse range of domains, thereby shaping the research agenda in those domains. (shrink)

What are the processes, from conception to adulthood, that enable a single cell to grow into a sentient adult? The processes that occur along the way are so complex that any attempt to understand development necessitates a multi-disciplinary approach, integrating data from cognitive studies, computational work, and neuroimaging - an approach till now seldom taken in the study of child development. Neuroconstructivism is a major new 2 volume publication that seeks to redress this balance, presenting an integrative new framework for (...) considering development. Computer and robotic models provide concrete tools for investigating the processes and mechanisms involved in learning and development. Volume 2 illustrates the principles of 'Neuroconstructivist' development, with contributions from 9 different labs across the world. Each of the contributions illustrates how models play a central role in understanding development. The models presented include standard connectionist neural network models as well as multi-agent models. Also included are robotic models emphasizing the need to take embodiment and brain-system interactions seriously. A model of Autism and one of Specific Language Impairment also illustrate how atypical development can be understood in terms of the typical processes of development but operating under restricted conditions. This volume complements Volume 1 by providing concrete examples of how the 'Neuroconstructivist' principles can be grounded within a diverse range of domains, thereby shaping the research agenda in those domains. (shrink)

Neuroconstructivism: How the Brain Constructs Cognition proposes a unifying framework for the study of cognitive development that brings together (1) constructivism (which views development as the progressive elaboration of increasingly complex structures), (2) cognitive neuroscience (which aims to understand the neural mechanisms underlying behavior), and (3) computational modeling (which proposes formal and explicit specifications of information processing). The guiding principle of our approach is context dependence, within and (in contrast to Marr [1982]) between levels of organization. We propose that three (...) mechanisms guide the emergence of representations: competition, cooperation, and chronotopy; which themselves allow for two central processes: proactivity and progressive specialization. We suggest that the main outcome of development is partial representations, distributed across distinct functional circuits. This framework is derived by examining development at the level of single neurons, brain systems, and whole organisms. We use the terms encellment, embrainment, and embodiment to describe the higher-level contextual influences that act at each of these levels of organization. To illustrate these mechanisms in operation we provide case studies in early visual perception, infant habituation, phonological development, and object representations in infancy. Three further case studies are concerned with interactions between levels of explanation: social development, atypical development and within that, developmental dyslexia. We conclude that cognitive development arises from a dynamic, contextual change in embodied neural structures leading to partial representations across multiple brain regions and timescales, in response to proactively specified physical and social environment. (shrink)

This issue of Technoetic Arts: A Journal of Speculative Research (TA) encompasses eight articles by artists and scholars from around the globe who engage with methodologies of art practice within research that reflects on technological and ecological change, contributing to the discourse on the inclusion of subjective experience in research. The articles by authors Dulmini Perera, Kate Doyle, Nora S. Vaage, Merete Lie, Nikita Peresin Meden, Kristina Pranjić, Peter Purg, Nicolaas H. Jacobs, Marth Munro, Chris Broodryk, Semi Ryu, Rahul Mahata, (...) Doreswamy, Sana Altaf and Aqib Javid Parry form a collection that crosses disciplines and genres to engage in fundamental critique of existing modes of enquiry and conclusion. The texts situate art and design methodologies in particular cultural contexts and in relation to frameworks defined by research methodologies of the sciences and humanities to gain agency for critique and to counter a sense of inevitability that has come to mark the most recent crises. (shrink)

Both short and long-term video-game play may result in superior performance on visual and attentional tasks. To further these findings, we compared the performance of experienced male video-game players (VGPs) and non-VGPs on a Simon-task. Experienced-VGPs began playing before the age of 10, had a minimum of 8 years of experience and a minimum play time of over 20 h per week over the past 6 months. Our results reveal a significantly reduced Simon-effect in experienced-VGPs relative to non-VGPs. However, this (...) was true only for the right-responses, which typically show a greater Simon-effect than left-responses. In addition, experienced-VGPs demonstrated significantly quicker reaction times and more balanced left-versus-right-hand performance than non-VGPs. Our results suggest that experienced-VGPs can resolve response-selection conflicts more rapidly for right-responses than non-VGPs, and this may in part be underpinned by improved bimanual motor control. (shrink)

Dieses von mir im J. 1924 behandelte Papyrusbruchstück wurde 1927 von v. Wilamowitz berücksichtigt. Er hält meine Zurückfuhrüng des Bruchstückes auf Antiphon für sehr ansprechend und auch meine Erklärung für treffend; die Ergänzungen befriedigen ihn nur zum Teil. Letzteres muss ich ihm unbedingt zugeben. Leider sind alle kleinen Fragmente des Papyrus sowie die Zz. 1–6 des Fr. B bei dem Hinüberführen aus England nach Amerika spurlos verschwunden und somit fiir die Wissenschaft auf immer verloren; es ist also nicht mehr möglich (...) zu beurteilen, ob ich Recht hatte, als ich die Zz. 14–15 des Fr. A mit dem Fr. F vereinigte. Dagegen ist Col. II. des Fr. A glücklicherweise erhalten; Prof. W. L. Westermann legte eine ganz hervorragende Freundlichkeit an den Tag, indem er mir zuerst eine photographische Aufnahme davon zusandte und dann meine Lesung an der Hand des Originals prüfte. Bei dem näheren Studium der Photographie bemerkte ich, dass sowohl Hunts Lesung der Z. 7 wie auch meine fruhere durch diese falsche Lesung ins Leben gerufene Erganzung ganz unmöglich sind. Auf der Photographie las ich Z. 7 t περ[ι] επ[ ]ηδ‐‑, und teilte dieses Ergebnis W. L. Westermann mit. Nachdem er in das Original noch einmal eingesehen hatte, antwortete er mir darauf; ‘Das ist die richtige Lesung. Es ist absolut sicher.’ Zu der scheinbar nächstliegenden Ergänzung Περ[] έπ[ιτ]ηδ[ευ]μάτων, die auch ich im ersten Augenblick für passend hielt, kam Westermann, nachdem ihm mein Vorschlag zur richtigen Lesung des Textes bekannt worden war, ganz unabhängig von mir; ich glaube trotzdem dass diese Lesung nicht das Richtige trifft. Wir haben doch in Col. II. eine Reihe von Antithesen ; aus περ Υο‐‑ νης ist aber keine Antithese zu έπιτηδεύματα zu konstruieren. Was nun diese Stelle anbetrifft, so ist hier nur die Lesung Υο möglich, keinesfalls aber das von mir a. a. O. vermutete Υα Aus den Resten Υο. νης oder Υο.νης ist allerdings kein griechisches Wort zu erganzen; doch haben die einzelnen Zeilen des Papyrus nicht gleiche Längen, sodass nichts dem im Wege steht, dass Z. nach Υο auch nichts gestanden habe; dann gelangen wir zur Lesung: πε[ρ] Υο[] έπ[ικ]ηδ [ευ]μάτων, d. h. ‘von der Geburt der Menschen sowie von den Bestattungsbrauchen’ —auch hier haben wir dann, wie in alien anderen Antithesen von Col. II. an der ersten Stelleυμξφροντα, an der zweiten ξυμΦέροντα, vgl. Antiphon, P. Oxy. 1364, Col. III., Z. 28: κατμένξναύτοέστινάΠων. (shrink)

Dieses von mir im J. 1924 behandelte Papyrusbruchstück wurde 1927 von v. Wilamowitz berücksichtigt. Er hält meine Zurückfuhrüng des Bruchstückes auf Antiphon für sehr ansprechend und auch meine Erklärung für treffend; die Ergänzungen befriedigen ihn nur zum Teil. Letzteres muss ich ihm unbedingt zugeben. Leider sind alle kleinen Fragmente des Papyrus sowie die Zz. 1–6 des Fr. B bei dem Hinüberführen aus England nach Amerika spurlos verschwunden und somit fiir die Wissenschaft auf immer verloren; es ist also nicht mehr möglich (...) zu beurteilen, ob ich Recht hatte, als ich die Zz. 14–15 des Fr. A mit dem Fr. F vereinigte. Dagegen ist Col. II. des Fr. A glücklicherweise erhalten; Prof. W. L. Westermann legte eine ganz hervorragende Freundlichkeit an den Tag, indem er mir zuerst eine photographische Aufnahme davon zusandte und dann meine Lesung an der Hand des Originals prüfte. Bei dem näheren Studium der Photographie bemerkte ich, dass sowohl Hunts Lesung der Z. 7 wie auch meine fruhere durch diese falsche Lesung ins Leben gerufene Erganzung ganz unmöglich sind. Auf der Photographie las ich Z. 7 t περ[ι] επ[ ]ηδ‐‑, und teilte dieses Ergebnis W. L. Westermann mit. Nachdem er in das Original noch einmal eingesehen hatte, antwortete er mir darauf; ‘Das ist die richtige Lesung. Es ist absolut sicher.’ Zu der scheinbar nächstliegenden Ergänzung Περ[] έπ[ιτ]ηδ[ευ]μάτων, die auch ich im ersten Augenblick für passend hielt, kam Westermann, nachdem ihm mein Vorschlag zur richtigen Lesung des Textes bekannt worden war, ganz unabhängig von mir; ich glaube trotzdem dass diese Lesung nicht das Richtige trifft. Wir haben doch in Col. II. eine Reihe von Antithesen ; aus περ Υο‐‑ νης ist aber keine Antithese zu έπιτηδεύματα zu konstruieren. Was nun diese Stelle anbetrifft, so ist hier nur die Lesung Υο möglich, keinesfalls aber das von mir a. a. O. vermutete Υα Aus den Resten Υο. νης oder Υο.νης ist allerdings kein griechisches Wort zu erganzen; doch haben die einzelnen Zeilen des Papyrus nicht gleiche Längen, sodass nichts dem im Wege steht, dass Z. nach Υο auch nichts gestanden habe; dann gelangen wir zur Lesung: πε[ρ] Υο[] έπ[ικ]ηδ [ευ]μάτων, d. h. ‘von der Geburt der Menschen sowie von den Bestattungsbrauchen’ —auch hier haben wir dann, wie in alien anderen Antithesen von Col. II. an der ersten Stelleυμξφροντα, an der zweiten ξυμΦέροντα, vgl. Antiphon, P. Oxy. 1364, Col. III., Z. 28: κατμένξναύτοέστινάΠων. (shrink)

Πόλεμος πάντων μὲν πατήρ ἐστι War is the father of all. New : Publication of my book : Histoire du libéralisme in Editions Ellipses, on Fnac or Amazon.1) HERACLITUS : 139 Fragments.a) Heraclitus (PDF) Original Greek text : Diels; English translation : John Burnet (1912), French translation of the English translation (1919), in PDFb) Heraclitus (unicode) : Parallel version or Interlinear version (Work in Progress) Original Greek text : Diels; English translation : John Burnet (1912), French translation of the English (...) translation (1919)c) Heraclitus : Original greek text : original pages of Hermann Diels edition (1912)2) The Encyclopædia Britannica Eleventh Edition (1910–1911) : HERACLITUS (Ἡράκλειτος; c. 540-475 B.C.), Greek philosopher, was born at Ephesus of distinguished parentage. Of his early life and education we know nothing; from the contempt with which he spoke of all his fellow-philosophers and of his fellow-citizens as a whole we may gather that he regarded himself as self-taught and a pioneer of wisdom. So intensely aristocratic (hence his nickname ὀχλολοίδορος, "he who rails at the people") was his temperament that he declined to exercise the regal-hieratic office of βασιλεύς which was hereditary in his family, and presented it to his brother. It is probable, however, that he did occasionally intervene in the affairs of the city at the period when the rule of Persia had given place to autonomy; it is said that he compelled the usurper Melancomas to abdicate. From the lonely life he led, and still more from the extreme profundity of his philosophy and his contempt for mankind in general, he was called the "Dark Philosopher" (ὁ σκοτεινός), or the "Weeping Philosopher," in contrast to Democritus, the "Laughing Philosopher." κακοὶ μάρτυρες Heraclitus is in a real sense the founder of metaphysics. Starting from the physical standpoint of the Ionian physicists, he accepted their general idea of the unity of nature, but entirely denied their theory of being. The fundamental uniform fact in nature is constant change (πάντα χωρεῖ καὶ οὐδὲν μένει); everything both is and is not at the same time. He thus arrives at the principle of Relativity; harmony and unity consist in diversity and multiplicity. The senses are "bad witnesses" (κακοὶ μάρτυρες); only the wise man can obtain knowledge. To appreciate the significance of the doctrines of Heraclitus, it must be borne in mind that to Greek philosophy the sharp distinction between subject and object which pervades modern thought was foreign, a consideration which suggests the conclusion that, while it is a great mistake to reckon Heraclitus with the materialistic cosmologists of the Ionic schools, it is, on the other hand, going too far to treat his theory, with Hegel and Lassalle, as one of pure Panlogism. Accordingly, when he denies the reality of Being, and declares Becoming, or eternal flux and change, to be the sole actuality, Heraclitus must be understood to enunciate not only the unreality of the abstract notion of being, except as the correlative of that of not-being, but also the physical doctrine that all phenomena are in a state of continuous transition from non-existence to existence, and vice versa, without either distinguishing these propositions or qualifying them by any reference to the relation of thought to experience. " Every thing is and is not'"; all things are, and nothing remains. So far he is in general agreement with Anaximander (q.v.), but he differs from him in the solution of the problem, disliking, as a poet and a mystic, the primary matter which satisfied the patient researcher, and demanding a more vivid and picturesque element. Naturally he selects fire, according to him the most complete embodiment of the process of Becoming, as the principle of empirical existence, out of which all things, including even the soul, grow by way of a quasi condensation, and into which all things must in course of time be again resolved. But this primordial fire is in itself that divine rational process, the harmony of which constitutes the law of the universe (see LOGOS). Real knowledge consists in comprehending this all-pervading harmony as embodied in the manifold of perception, and the senses are "bad-witnesses," because they apprehend phenomena, not as its manifestation, but as "stiff and dead." In like manner real virtue consists in the subordination of the individual to the laws of this harmony as the universal reason wherein alone true freedom is to be found." The law of things is a law of Reason Universal (λόγος), but most men live as though they had a wisdom of their own." Ethics here stands to sociology in a close relation, similar, in many respects, to that which we find in Hegel and in Comte. For Heraclitus the soul approaches most nearly to perfection when it is most akin to the fiery vapour out of which it was originally created, and as this is most so in death, " while we live our souls are dead in us, but when we die our souls are restored to life." The doctrine of immortality comes prominently forward in his ethics, but whether this must not be reckoned with the figurative accommodation to the popular theology of Greece which pervades his ethical teaching, is very doubtful. The school of disciples founded by Heraclitus flourished for long after his death, the chief exponent of his teaching being Cratylus. A good deal of the information in regard to his doctrines has been gathered from the later Greek philosophy, which was deeply influenced by it. BIBLIOGRAPHY.—The only authentic extant work of Heraclitus is the περὶ φύσεως. The best edition (containing also the probably spurious Ἐπιστολαί) is that of I. Bywater, Heracliti Ephesii reliquiae (Oxford, 1877); of the epistles alone by A. Westermann (Leipzig, 1857). See also in A. H. Ritter and L. Preller's Historia philosophiae Graecae (8th ed. by E. Wellmann, 1898); F. W. A. Mullach, Fragm. philos. Graec. (Paris, 1860); A. Fairbanks, The First Philosophers of Greece (1898); H. Diels, Heraklit von Ephesus (2nd ed., 1909), Greek and German. English translation of By water's edition with introduction by G. T. W. Patrick (Baltimore, 1889). For criticism see, in addition to the histories of philosophy, F. Lassalle, Die Philosophie Herakleitos' des Dunklen (Berlin, 1858; 2nd ed., 1892), which, however, is too strongly dominated by modern Hegelianism; Paul Schuster, Heraklit von Ephesus (Leipzig, 1873); J. Bernays, Die heraklitischen Briefe (Berlin, 1869); T. Gomperz, Zu Heraclits Lehre und den Uberresten seines Werkes (Vienna, 1887), and in his Greek Thinkers (English translation, L. Magnus, vol. i. 1901); J. Burnet, Early Greek Philosophy (1892); A. Patin, Heraklits Einheitslehre (Leipzig, 1886); E. Pfleiderer, Die Philosophie des Heraklit us von Ephesus im Lichte der Mysterienidee (Berlin, 1886); G. T. Schäfer, Die Philosophie des Heraklit von Ephesus und die moderne Heraklilforschung (Leipzig, 1902); Wolfgang Schultz, Studien zur antiken Kultur, i.; Pythagoras und Heraklit (Leipzig, 1905); O. Spengler, Heraklit. Eine Studie ilber den energetischen Grundgedanken seiner Philosophie (Halle, 1904); A. Brieger, "Die Grundzüge der heraklitischen Physik " in Hermes, xxxix. (1904) 182-223, and "Heraklit der Dunkle" in Neue Jahrb. f. das klass. Altertum (1904), p. 687. For his place in the development of early philosophy see also articles IONIAN SCHOOL OF PHILOSOPHY and LOGOS. Ancient authorities: Diog. Laert. ix.; Sext. Empiric, Adv. mathem. vii. 126, 127, 133; Plato, Cratylus, 402 A and Theaetetus, 152 E; Plutarch, Isis and Osiris, 45, 48; Arist. Nic. Eth. vii. 3, 4; Clement of Alexandria, Stromata, v. 599, 603 (ed. Paris). (J. M. M.) Copyright. (shrink)

Most scholars think not. But in this pioneering book, John H. Zammito challenges that view by revealing a precritical Kant who was immensely more influential than the one philosophers think they know.

Long‐term potentiation (LTP) of excitatory synapses is a leading model to explain the concept of information storage in the brain. Multiple mechanisms contribute to LTP, but central amongst them is an increased sensitivity of the postsynaptic membrane to neurotransmitter release. This sensitivity is predominantly determined by the abundance and localization of AMPA‐type glutamate receptors (AMPARs). A combination of AMPAR structural data, super‐resolution imaging of excitatory synapses, and an abundance of electrophysiological studies are providing an ever‐clearer picture of how AMPARs are (...) recruited and organized at synaptic junctions. Here, we review the latest insights into this process, and discuss how both cytoplasmic and extracellular receptor elements cooperate to tune the AMPAR response at the hippocampal CA1 synapse. (shrink)

At a meeting of the Physical Society of London in 1925 participants expressed their concerns regarding a recent suggestion by the Australian physicist T. H. Laby for replicating the established value of the mechanical equivalent of heat. This rather controversial discussion about the value of redetermining this numerical fact brings to light different understandings of the moral economy of accuracy in scientific work; it signals a distinctive new stage in the historical understanding of accuracy and precision and the moral integrity (...) in conducting research. (shrink)

We present an epistemological schema of natural sciences inspired by Peirce's pragmaticist view, stressing the role of the \emph{phenomenological map}, that connects reality and our ideas about it. The schema has a recognisable mathematical/logical structure which allows to explore some of its consequences. We show that seemingly independent principles as the requirement of reproducibility of experiments and the Principle of Sufficient Reason are both implied by the schema, as well as Popper's concept of falsifiability. We show that the schema has (...) some power in demarcating science by first comparing with an alternative schema advanced during the first part of the 20th century which has its roots in Hertz and has been developed by Einstein and Popper. Further, the identified differences allow us to focus in the construction of Special Relativity, showing that it uses an intuited concept of velocity that does not satisfy the requirements of reality in Peirce. While the main mathematical observation connected with this issue has been known for more than a century, it has not been investigated from an epistemological point of view. A probable reason could be that the socially dominating epistemology in physics does not encourage such line of work. We briefly discuss the relation of the abduction process presented in this work with discussions regarding ``abduction'' in the literature and its relation with ``analogy''. (shrink)

One influential philosophical account of desire treats it as a species of propositional attitude, possessing broadly the same kinds of content as belief while differing in direction of fit. However, this arguably neglects more basic forms of desire. It seems an open possibility, for example, that animals that lack propositional attitudes might still have simple desires mediated by sensations like hunger and thirst. In this essay, I will argue the case for the existence of these basic desires, and suggest a (...) strategy for understanding them. I begin by briefly discussing some different approaches to the psychological ascription of desires, and examine some candidate forms of behaviour that might be constitutive of a creature's having a basic desire. I go on to argue that a form of behaviour known as motivational trade-off offers a particularly promising framework for attributions of basic desire. (shrink)

This book covers the author's conception of God aside from any religion. He does not come from a religious view in order to transmit the truest conception of God that he is capable of because any religion, whatever it might be, always claims God for itself in an exclusionary fashion. In other words, you must be a follower of the chosen faith before God will accept you into his kingdom. Wells rejects this view. Any man or woman who accepts God's (...) love as one person connecting to their own creator, is fine. An intermediary, despite what they might crow from whatever pulpits they use, is not necessary. We are all God's children. We are all seeking the same God, so to be dogmatic within a certain exclusionary faith is small-minded and petty. If you want to grow up, spiritually, then this book is for you. (shrink)

In the present essay we attempt to reconstruct Newtonian mechanics under the guidance of logical principles and of a constructive approach related to the genetic epistemology of Piaget and García (Psychogenesis and the history of science, Columbia University Press, New York, 1989). Instead of addressing Newton’s equations as a set of axioms, ultimately given by the revelation of a prodigious mind, we search for the fundamental knowledge, beliefs and provisional assumptions that can produce classical mechanics. We start by developing our (...) main tool: the no arbitrariness principle, that we present in a form that is apt for a mathematical theory as classical mechanics. Subsequently, we introduce the presence of the observer, analysing then the relation objective–subjective and seeking objectivity going across subjectivity. We take special care of establishing the precedence among all contributions to mechanics, something that can be better appreciated by considering the consequences of removing them: (a) the consequence of renouncing logic and the laws of understanding is not being able to understand the world, (b) renouncing the early elaborations of primary concepts such as time and space leads to a dissociation between everyday life and physics, the latter becoming entirely pragmatic and justified a-posteriori (because it is convenient), (c) changing our temporary beliefs has no real cost other than effort. Finally, we exemplify the present approach by reconsidering the constancy of the velocity of light. It is shown that it is a result of Newtonian mechanics, rather than being in contradiction with it. We also indicate the hidden assumption that leads to the (apparent) contradiction. (shrink)

On the basis of the archival materials, first identified by the authors, and the published historical sources that have not yet come to the attention of historians of science, this article reconstructs the biography of Johann Christian Weltzien (1767–1829), doctor of medicine and surgery. In 1785, Weltzien became a court physician. In 1799, in the retinue of Grand Duke Konstantin Pavlovich, he participated in Italian and Swiss military campaigns. After that, Weltzien was assigned to the Сourt of Grand Duke Konstantin (...) Pavlovich of Russia and stayed at his court until 1810. He started his charitable activities in the Medico-Philanthropic Committee. From May 1810 to the middle of 1825, Weltzien was a physician at the Imperial Page Corps. It turned out that around the same time, in 1804–1825, he was a member of the Medical Council. Furthermore, as there were two medical councils under two ministries at the time, in 1811–1822, he was a member of both. Since 1825, Weltzien lived on his estate in Somel, now Vaiatu Manor in Estonia, and died in St. Petersburg. Weltzien’s work as a provincial physician prompted him to write a book on medical police, which was published in 1785. It has been established that this remained his only book on the topic. The article shows that Weltzien became one of the first ideologists of state care for public health in the Russian Empire. Weltzien’s ideas, expressed over 200 years ago, regarding the state having mechanisms to impact public health and the importance of not excluding it from solving health problems have not lost their significance even today. (shrink)

There is a well-worn image and phrase for libertarianism: "atomized individualism." This hobgoblin has spread so thoroughly that even some libertarians think their philosophy unreservedly supports private persons, whatever the situation, whatever their behavior. Smith's Self-Interest and Social Order in Classical Liberalism, corrects this misrepresentation with careful intellectual surveys of Hume, Smith, Hobbes, Butler, Mandeville, and Hutcheson and their respective contributions to political philosophy.

Is 'n transendentale kritiek religieus bepaald? deur V. Brümmer. -- Constitution and creativity in the philosophy of Edmund Husserl, by A. L. Conradie. -- Studium Generale, deur H. J. De Vleeschauwer. -- Sociology of law and its philosophical foundtions, by H. Dooyeweerd. -- Beginvrae en antwoorde in der Wysbegeerte, deur P. G. W. Du Plesis. -- Max Scheler's concern with the highest perfection, by S. I. M. Du Plessis. -- Christelike wetenskap, highest perfection, by S. I. M. Deu Plessis. -- (...) Christelike wetenskap, deur B. Duvenage. -- Malan's critical study, by H. Hart. -- Raakpunte vir 'n dialoog met 'n Christelike Wysbegeerte, deur A. M. T. Meyer. -- Nuwe gedagtes oor die begrip Natuurwet, deur A. H. Murray. -- Die voorwaardes vir die uitbou van 'n wysgerige antropologie, deur C. K. Oberholzer. -- De structuur van feit-en-betekenis, deur K. J. Popma. -- The relation of the arts to the presentation of the truth, by C. G. Seerveld. -- Gezag en vrijheid in het licht van Gods Woord, deur J. Stellingwerff. -- Voorveronderstellings vir 'n filosogie van die opvoeding, deur J. A. L. Taljaard. -- Objektiwiteit, sekularisasie en geskiedenis, deur N. T. Van der Merwe. -- Etiek: wetenskap van relasies, deur S. P. Van der Walt. -- Wetten en feiten, deur C. A. Van Peursen. -- Enige opmerkingen over entiteiten, deur H. Van Riessen. -- Richard Kroner on Herman Dooyeweerd, by C. Van Til. -- De mens in de taalkunde, deur P. A. Verburg, -- Enkele motieven van het anti-militair pacifisme, deur S, U. Zuidema. -- Publications of prof. dr. H. G. Stoker. Publikasies van prof. dr. H. G. Stoker (p. 303-311). (shrink)