On estime que plus de 90% des innovations disruptives ont un caractère fortuit au lieu de résulter d’une recherche prédictible et justifiable.

We present an investigation into the relation between design princi- ples in Japanese gardens, and their associated perceptual effects. This leads to the realization that a set of design principles described in a Japanese gardening text by Shingen (1466), shows many parallels to the visual effects of perceptual grouping, studied by the Gestalt school of psychology. Guidelines for composition of rock clusters closely relate to perception of visual figure. Garden design elements are arranged into patterns that simplify figure-ground segmentation, while (...) seemingly balancing the visual salience of subparts and the global arrangement. Visual ‘ground’ is analyzed via medial axis transformation (MAT), often associated with shape perception in humans. MAT analysis reveals implicit structure in the visual ground of a quintessential rock garden design. The MAT structure enables formal com- parison of structure of figure and ground. They share some aesthetic qualities, with interesting differences. Both contain naturalistic asymmetric, self-similar, branching structures. While the branching pattern of the ground converges towards the viewer, that of the figure converges in the opposite direction. (shrink)

This critical notice explores the distinction between the justifying and requiring forces of reasons, which Joshua Gert introduced and defended in his book Brute Rationality.

Good book. See this review's final paragraph for my conspiracy theory defending reflectance physicalism.

For a symposium on Douglas W. Portmore's Commonsense Consequentialism: Wherein Morality Meets Rationality.

In recent years, several philosophers - including Joshua Gert, Douglas Portmore, and Elizabeth Harman - have argued that there is a sense in which morality itself does not treat moral reasons as consistently overriding.2 My aim in the present essay is to develop and extend this idea from a somewhat different perspective. In doing so, I offer an alternative way of formalizing the idea that morality is modest about the weight of moral reasons in this way, thereby making more (...) explicit the connections between this thesis and similar issues in the epistemic sphere. In addition, I discuss how these ideas can transform our thinking about familiar questions in ethics such as the nature of self-effacement, the significance of reflective endorsement, the weight that moral reasons ought to be given in all things consideration, and the plausibility of “indirect” moral theories. Finally, I show that these ideas are compatible even with pictures of morality – such as Kant’s – on which morality might seem to anything but modest about its own importance. In doing so, I stress that it is possible to see morality as modest about the weight of specifically moral reasons, while also seeing all practical reasons as grounded in morality more indirectly – namely, by seeing morality as determining the weight that both moral and non-moral considerations deserve to have in all things considered deliberation. (shrink)

This paper begins with a response to Josh Gert’s challenge that ‘on a par with’ is not a sui generis fourth value relation beyond ‘better than’, ‘worse than’, and ‘equally good’. It then explores two further questions: can parity be modeled by an interval representation of value? And what should one rationally do when faced with items on a par? I argue that an interval representation of value is incompatible with the possibility that items are on a par (a (...) mathematical proof is given in the appendix). I also suggest that there are three senses of ‘rationally permissible’ which, once distinguished, show that parity does distinctive practical work that cannot be done by the usual trichotomy of relations or by incomparability. In this way, we have an additional argument for parity from the workings of practical reason. (shrink)

Johnston famously argued that the colors are, more or less inclusively speaking, dispositions to cause color experiences by arguing that this view best accommodates his five proposed core beliefs about color. Since then, Campbell, Kalderon, Gert, Benbaji, and others, have all engaged with at least some of Johnston’s proposed core beliefs in one way or another. Which propositions are core beliefs is ultimately an empirical matter. We investigate whether Johnston’s proposed core beliefs are, in fact, believed by assessing the (...) agreement/disagreement of non-philosophers with them. Two experiments are run each with large sample sizes, the second designed to address criticisms of the first. We find that non-philosophers mostly agree with the proposed core beliefs, but that they agree with some more than others. (shrink)

This article examines the meaningful intervention that Gert-Jan Van der Heiden’s recent book, The Voice of Misery: A Continental Philosophy of Testimony, makes in the developing field of the philosophy of testimony. I argue that this intervention is accomplished through a phenomenological investigation into the nature of the testimonial object and of the demand that it makes upon one who bears witness. In taking such an approach, I argue, Van der Heiden initiates an ontological turn in the field of (...) testimonial theory, shifting the conversation away from a debate about the conditions in which belief in testimony is justified – a debate that has in many ways defined the field for philosophers in the Anglo-American tradition. I suggest that Van der Heiden’s account is helpful in demonstrating that, in many cases, doing justice to a testimonial object requires an epistemic-ethical attitude other than belief. The article concludes by developing a few questions for Van der Heiden based on my interpretation of his project, including to what extent his phenomenology of testimony can account for how often our receptivity to testimony depends on the default trust that we have in others by virtue of our fundamental immersion in social life. (shrink)

We can often permissibly choose a worse self-interested option over a better altruistic alternative. For example, it is permissible to eat out rather than donate the money to feed five hungry children for a single meal. If we eat out, we do something permissibly partial toward ourselves. If we donate, we go beyond the call of moral duty and do something supererogatory. Such phenomena aren’t easy to explain, and they rule out otherwise promising moral theories. Incommensurability and Ruth Chang’s notion (...) of parity can explain certain small improvement puzzles, but they can’t explain permissible partiality and supererogation. On the other hand, Josh Gert’s distinction between justifying and requiring weight can explain all three phenomena: permissible partiality, supererogation, and the relevant small improvement puzzle. Indeed, this chapter provides a reason to endorse the justifying/requiring weight distinction by showing that it provides the only extant explanation of all three phenomena. (shrink)

Reasons-based accounts of our normative conclusions face difficulties in distinguishing between what ought to be done and what is required. This article addresses this problem from a formal perspective. I introduce a rudimentary formalization of a reasons-based account and demonstrate that that the model faces difficulties in accounting for the distinction between oughts and requirements. I briefly critique attempts to distinguish between oughts and requirements by appealing to a difference in strength or weight of reasons. I then present a formalized (...) reasons-based account of permissions, oughts and requirements. The model exploits Joshua Gert (2004; 2007) and Patricia Greenspan’s (2005; 2007; 2010) suggestion that some reasons perform a purely justificatory function. I show that the model preserves the standard entailment relationships between requirements, oughts and permissions. (shrink)

Introduction to volume containing essays by Simon Blackburn, John Cottingham, Frances Ferguson, Joshua Gert, Peter Goldie, Charles Guignon, Sharon Krause, Christopher Kutz, Daniel Markovits, Elijah Millgram, Martha Nussbaum, and Carol Rovane.

On a ‘comparative’ conception of practical reasons, reasons are like ‘weights’ that can make an action more or less rational. Bernard Gert adopts instead a ‘toggle’ conception of practical reasons: something counts as a reason just in case it alone can make some or other otherwise irrational action rational. I suggest that Gert’s conception suffers from various defects, and that his motivation for adopting this conception – his central claim that actions can be rational without there being reasons (...) for them – does not require adoption of the toggle conception. The more intuitive comparative conception of reasons for action can accommodate the insight. (shrink)

In this paper I reply to two sets of criticisms—a first from Joshua Gert, and a second from Keith Allen—of the relationalist view of color developed and defended in my book, The Red and the Real: An Essay on Color Ontology.

This paper analyses three centuries of developing German-language philosophy journals, from the first journals published in 1665 to those from the first decade of post-WWII recovery. Relying upon two bibliographies of philosophical journals collected in the 1970s, one by Joachim Kirchner and one by Wolfram Hogrebe, Rudolf Kamp, and Gert König, we attained a dataset of 607 journals. To analyse the population of periodicals, we identified three key components: the longevity of each journal and the growth rate and the (...) continuity of the body of the journal population. The most puzzling finding is that there was a rapid growth in the number of journals at the end of the eighteenth century followed by a long decline in numbers that lasted almost a century. This paper analyses the structure of the boom in philosophical periodicals after 1888, followed by the effects of both World Wars, and identifies the communication crisis that occurred at the height of the Weimar Republic. (shrink)

Diese Arbeit zeichnet die Schwierigkeit nach, die Franz Brentano zwischen der Begruendung der Sittlichkeit aus moralischem Gefuehl und der Begruendung aus Vernunftgruenden zeitlebens gehabt hat: Die Eroerterung eines Gefuehls verwandelt dieses unweigerlich in ein Konzept der Kommunikation, das nicht nur rationaler, vielmehr noch oeffentlicher Diskussion zugaenglich wird. Beschraenkt man aber die Quelle des moralischen Gefuehls UND den Verstand auf ein individuelles Subjekt, geraet man mit der Untersuchung der Evidenz der sittlichen Erkenntnis in die naemlichen Aporien wie Franz Brentano.