In lieu of an abstract, here is a brief excerpt of the content:Feminist Studies 44, no. 2. © 2018 by Feminist Studies, Inc. 379 Amy Bhatt The Butterfly Effect of Women’s Studies My entry into women’s studies began over two decades ago when I was an undergraduate at Emory University. I took Introduction to Women’s Studies in 1998, the same year that Feminist Studies published a formative issue on the evolution of women’s studies in the academy. I turned (...) to doctoral programs in women’s studies after graduation, all the while growing aware of the heated debates over the future (and the past) of the field, the challenges of crafting interdisciplinary graduate programs, the relationship between academic and activist feminisms, and the ramifications of institutionalization. By the time I entered the University of Washington’s PhD program in 2004, these conversations were further enlivened by the expansion of graduate degrees and certificates across the country and internationally. In 2017, I was promoted to associate professor after being hired as the first women’s studies tenure-track faculty member at my current institution, the University of Maryland, Baltimore County. Having been a part of three differently situated women’s studies programs/departments, I have experienced both the advantages that the field offers for engaged scholarship and teaching, but also the conceptual, resourcing, and workload problems that arise from doing interdisciplinary work. While not engaging the longer history of the scholarly and institutional evolution of women’s studies, my perspective as a relatively recently minted PhD student considers two areas: the promises and pitfalls of 380 Amy Bhatt graduate training (particularly in light of a constricted academic job market) and the impact of integrating women’s studies into the academy. Impossibilities and Promises In her introduction to a special forum on the paradoxes and challenges of women’s studies in graduate education in a 2003 issue of Feminist Studies (which took up the themes raised in the 1998 issue), Pamela Caughie points out that tension is at the core of women’s studies: “Interdisciplinary work depends on disciplinary knowledges; professional training may thwart social activism; theory cannot always be applied.”1 While women ’s studies programs have proliferated across higher education, even ardent feminist academics have levied forceful arguments against institutionalizing women’s studies as stand-alone units. In the same Feminist Studies article, Caughie argues that women’s studies should avoid “disciplining interdisciplinarity,” in part, because such attempts presume a (false) coherence in traditional disciplines that is oppositional to the interstitial nature of interdisciplinarity. While she advocates for graduate training in the field, she expresses concern that by hiring faculty in women’s studies and advocating for a shared research agenda, “we risk reproducing rather than critiquing disciplinary structures.”2 Likewise, in her introduction to Women’s Studies on the Edge, Joan Wallach Scott argues that, because of its formalization within the academy, women’s studies has lost its connection to activism and institutional critique.3 And perhaps most famously, Wendy Brown argues that the work of feminist, queer, critical race, and postcolonial theory ought to be returned to the disciplines, rather than remain within the separate, 1. Pamela L. Caughie, “Graduate Education in Women’s Studies: Paradoxes and Challenges (Introduction to Forum),” Feminist Studies 29, no. 2 (Summer 2003): 406. 2. Pamela L. Caughie, “Professional Identity Politics,” Feminist Studies 29, no. 2 (2003): 430. See also Robyn R. Warhol, “Nice Work, If You Can Get It— And If You Can’t? Building Women’s Studies Without Tenure Lines,” in Women’s Studies on Its Own, ed. Robyn Wiegman (Durham, NC: Duke University Press, 2002), 224–32. 3. Joan Wallach Scott, “Introduction: Feminism’s Critical Edge,” in Women’s Studies on the Edge, ed. Joan Wallach Scott (Durham, NC: Duke University Press, 2008), 1–16. Amy Bhatt 381 often marginalized, domain of women’s studies.4 Such critics caution against the formalization of and, in some cases, expansion of women’s studies across academe. On the other hand, advocates of women’s studies point out that the disciplines themselves are a taxonomy that reflects particular power/content /methodologicalinterventionsandthattheyarenotself-evidentspaces of knowledge production. They argue that formalization ought to be celebrated and that the debate over interdisciplinarity versus traditional disciplines has... (shrink)

Peter Smith; XIV*—The Butterfly Effect, Proceedings of the Aristotelian Society, Volume 91, Issue 1, 1 June 1991, Pages 247–268, https://doi.org/10.1093/aristot.

Sceptical theism claims that we have vast ignorance about the realm of value and the connections, causal and modal, between goods and bads. This ignorance makes it reasonable for a theist to say that God has reasons beyond our ken for allowing the horrendous evils we observe. But if so, then does this not lead to moral paralysis when we need to prevent evils ourselves? For, for aught that we know, there are reasons beyond our ken for us to allow (...) the evils, and so we should not prevent them. This paralysis argument, however, shall be argued to rest on a confusion between probabilities and expected utilities. A connection between this paralysis argument and Lenman's1 discussion of the butterfly effect and chaos will be drawn, and the solution offered will apply in both cases. (shrink)

Peter Smith; XIV*—The Butterfly Effect, Proceedings of the Aristotelian Society, Volume 91, Issue 1, 1 June 1991, Pages 247–268, https://doi.org/10.1093/aristot.

Long before the phrases “climate change” and “butterfly effect” were incorporated into the mainstream literature, these phrases appeared in an appropriate context almost verbatim in the first Chapter of a book entitled “The Emigrant” published in the mid-nineteenth century by Sir Francis Bond Head. Head was Upper Canada’s sixth Lieutenant Governor under King George IV and Queen Victoria. Head claimed that forest wildfires were “changing the climate” of North America as manifested in a warming effect “on the (...) thermometer”. In that author’s account, these fires were provoked by First Nations to create fly-free zones meant to attract game that they could then hunt more readily. Head used language such as “swarms of little flies, strange as it may sound, are, and for many years have been, most materially altering the climate…” which is remarkably reminiscent of E. N. Lorenz’s “butterfly effect” of the theory of chaotic dynamical systems. The historical context and the rationales that may have led Head to use this contemporary environmental language in a proper context are briefly discussed. (shrink)

'The Aestheticization of History and the Butterfly Effect: Visual Arts Series' introduces the audience to philosophical concepts that broach the beginning of the history of Western thought in Plato and Aristotle to that of more modern thought in the theoretician Jacques Rancière in which the main conceptual framework of this anthology is predicated. The introduction is mainly concerned with Rancière's concept of the distribution of the sensible, which is the arrangement of things accessible to our senses, what we (...) experience in real-time and space- compartmentalization and categorization of all things. These things do not just involve tangible items, but audible speech, written language, and visibilities. Rancière's theory of the regimes of art is undertaken as the unfolding of the distribution. Such is evoked in the various genres of visual art forms, from two-dimensional paintings to three-dimensional sculptures and architectures. Understanding the aesthetic regime of art is crucial for grasping how art performs time travel. One way of understanding this phenomenon is in terms of embodied philosophy imbued vis-à-vis art forms, which are subsequently challenged by contemporary artists. The contributing essays examine these reiterations, reevaluations-performances. Aesthetics is a term deriving from the 18th-century European Enlightenment. It is here that aesthetics as the study of beauty is probed for its political potential after the failure of the French Revolution. Many major thinkers during this period signed on to the aesthetic moment, recognizing that Reason in its present state failed to develop humankind beyond barbarism. J.E.B. Stuart's statue is part of an equestrian theme that approximates the Western canon of power and class in the pursuit of domination. But such power and domination will be dethroned in the restaging of history and the redistribution of said canon. This reimagining of the form not only alters perception but constitutes a new narrative. (shrink)

The discovery of sensitive dependence on initial conditions (SDIC) in nonlinear models runs counter to the textbook vision of CM, a vision guided by an almost exclusive focus on linear systems. Therefore, it is important to clearly distinguish between linear and nonlinear systems along with establishing some basic terminology (§I). The notions of SDIC and chaos also need clarification, since they play crucial roles in sensitive dependence (SD) arguments. This will require some discussion of Lyapunov exponents as well as the (...) relationship between nonlinear dynamics and chaos (§II and Appendix). For the sake of concreteness, it will also be useful to focus on the Laplacean vision for classical particle mechanics (e.g., Bishop 2002b, 2003 and 2005a), particularly the crucial notion of unique evolution (§III). The SD argument can then be stated in a clear form and its defenses, criticisms and limitations assessed in the more general context of nonlinear dynamics (§IV). Concluding remarks follow (§V). (shrink)

Some have argued that chaos, with its characteristic feature of sensitive dependence on initial conditions, should be sensitive to quantum events (Hobbs 1991; Kellert 1993). The upshot of these arguments is that classical chaos would then be indeterministic, but such a conclusion is dependent on which versions of quantum theory and solutions to the measurement problem are adopted (Bishop and Kronz 1999). In this essay, the relationship between quantum mechanics and sensitive dependence is placed in the general context of nonlinear (...) dynamics and is investigated in detail, revealing further limitations and quali…cations on these sensitive dependence arguments. (shrink)

Zhuangzi’s Butterfly Dream story can be read as a skeptical response to the Cartesian Cogito, ergo sum solution, for it presents I exist as fundamentally unprovable, on the grounds that the notion about “I” that it is guaranteed to refer to something existing, which Descartes seems to assume, is unwarranted. The modern anti-skepticism of Hilary Putnam employs a different strategy, which seeks to derive the existence of the world not from some “indubitable” truth such as the existence of myself (...) , but from the meaning of some particular assertion I make. In this paper, I argue, however, that Putnam’s argument fails to deliver on the promise of showing the self-refuting nature of the skeptical hypothesis, as it relies on a double use of “I”, a fallacy of equivocation, reflecting an unsolved tension between the argument’s general premise, which is rather Zhuangzian in spirit, and his unwitting adoption of that unwarranted notion about “I”. I try to show further that the skepticism in Zhuangzi’s Butterfly Dream not only can be used to refute the proofs of the existence of the empirical I , but also is effective against accounts concerning the existence of the transcendental I. (shrink)

In this paper we describe a test for Nijhout's hypothesis that the eyespot patterns on butterfly wings are the result of a threshold reaction of the epidermal cells to a concentration gradient of a diffusing degradable morphogen produced by focal cells at the centre of the future eyespot. The wings of the nymphalid butterfly, Bicyclus anynana, have a series of eyespots, each composed of a white pupil, a black disc and a gold outer ring. In earlier extirpation and (...) transplantation experiments it has been established that these eyespots are indeed organised around groups of signalling cells active during the first hours of pupal development. If these cells were to supply the positional information for eyespot formation in accordance with Nijhout's diffusion-degradation gradient model, then, when two foci are close together, the signals should sum, and this effect should be apparent in the detailed shape of the resulting pigment pattern. We give an equation for the form of the contours that would be obtained in this manner. We use this to test the morphogen gradient hypothesis on measurements of the outlines of fused eyespots obtained either by grafting focal cells close together, or by using a mutation that produces adjacent fused eyespots. The contours of the fused patterns were found to satisfy our equation, thus corroborating Nijhout's hypothesis to the extent possible with this particular type of experiment. (shrink)

An efficient intelligent fault diagnosis model was proposed in this paper to timely and accurately offer a dependable basis for identifying the rolling bearing condition in the actual production application. The model is mainly based on an improved butterfly optimizer algorithm- optimized kernel extreme learning machine model. Firstly, the roller bearing’s vibration signals in the four states that contain normal state, outer race failure, inner race failure, and rolling ball failure are decomposed into several intrinsic mode functions using the (...) complete ensemble empirical mode decomposition based on adaptive noise. Then, the amplitude energy entropies of IMFs are designated as the features of the rolling bearing. In order to eliminate redundant features, a random forest was used to receive the contributions of features to the accuracy of results, and subsets of features were set up by removing one feature in the descending order, using the classification accuracy of the SBOA-KELM model as the criterion to obtain the optimal feature subset. The salp swarm algorithm was introduced to BOA to improve optimization ability, obtain optimal KELM parameters, and avoid the BOA deteriorating into local optimization. Finally, an optimal SBOA-KELM model was constructed for the identification of rolling bearings. In the experiment, SBOA was validated against ten other competitive optimization algorithms on 30 IEEE CEC2017 benchmark functions. The experimental results validated that the SBOA was evident over existing algorithms for most function problems. SBOA-KELM employed for diagnosing the fault diagnosis of rolling bearings obtained improved classification performance and higher stability. Therefore, the proposed SBOA-KELM model can be effectively used to diagnose faults of rolling bearings. (shrink)

Arguments for the effectiveness, and even the indispensability, of mathematics in scientific explanation rely on the claim that mathematics is an effective or even a necessary component in successful scientific predictions and explanations. Well-known accounts of successful mathematical explanation in physical science appeals to scientists’ ability to solve equations directly in key domains. But there are spectacular physical theories, including general relativity and fluid dynamics, in which the equations of the theory cannot be solved directly in target domains, and yet (...) scientists and mathematicians do effective work there (McLarty 2023, Elder 2023). Building on extant accounts of structural scientific explanation (Bokulich 2011, Leng 2021), I argue that philosophical accounts of the role of equations in scientific explanation need not rely on scientists’ ability to solve equations independently of their understanding of the empirical or experimental context. For instance, the process of formulating solutions to equations can involve significant appeal to information about experimental contexts (Curiel 2010) or of physically similar systems (Sterrett 2023). Working from a close analysis of work in fluid mechanics by Martin Bazant and Keith Moffatt (2005), I propose an account of heuristic structural explanation in mathematics (Einstein 1921, Pincock 2021), which explains how physical explanations can be constructed even in domains where basic equations cannot be solved directly. (shrink)

In January 2007, media outlets across Australia reported the local court decision _Police v Rose_. Mr Rose pleaded guilty and the presiding magistrate recorded no conviction. This event sparked a ‘butterfly effect’ that culminated in legislative amendments changing the make-up of the body responsible for oversight of judges in New South Wales. Key players failed to observe the doctrine of the separation of powers; while others called for its observation. None of this would have been foreseeable to Mr (...) Rose or the two transit officers on the night he was detained. This paper uses complexity theory and digital media analysis to locate flashpoints around which critical incidents occur; and what the unexpected flow-on effects reveal about the host society. (shrink)

In response to Peter–Paul Verbeek’s and Paul Levinson’s reviews of my article ‘In Between Us,’ I comment on four criticisms. Firstly, my approach of ‘mediation as such’ does not endorse the view of mediation as secondary to mediata (i.e., entities), but does not exclude it either. Secondly, my concepts of “transparency of use” and of “context” are to be seen as philosophical ‘tools’ and not as mutually exclusive states. Thirdly, I agree with Levinson that technologies do indeed remediate, and mostly (...) not for the worse. However, fourthly, at the same time we should always be on guard for their nefarious effects. (shrink)

Agent-centered constraints on harming hold that some harmful upshots of our conduct cannot be justified by its generating equal or somewhat greater benefits. In this paper I argue that all plausible theories of agent-centered constraints on harming are undermined by the likelihood that our actions will have butterfly effects, or cause cascades of changes that make the world dramatically different than it would have been. Theories that impose constraints against only intended harming or proximally caused harm have unacceptable implications (...) for choices between more and less harmful ways of securing greater goods. This leaves as plausible only theories that impose constraints against causing some unintended distal harms. But, I argue, given the distal harms our actions are likely to cause through their butterfly effects, these theories entail that any way of sustaining our lives is overwhelmingly likely to involve unjustified killing, and that we are therefore morally required either to allow ourselves to waste away or kill ourselves. (shrink)

This chapter contains sections titled: To Shop or Not to Shop? That is The Question Do Prestigious, Ivy League, Male Philosophers Ever Think About Clothes? Yes! (Well, Sort Of) Individual Responsibility Only Seems to Fit In Extra Small Are Americans Boorish Butterflies? Am I Responsible for The Suffering of The World's Poor?

The big news about chaos is supposed to be that the smallest of changes in a system can result in very large differences in that system's behavior. The so-called butterfly effect has become one of the most popular images of chaos. The idea is that the flapping of a butterfly's wings in Argentina could cause a tornado in Texas three weeks later. By contrast, in an identical copy of the world sans the Argentinian butterfly, no such (...) storm would have arisen in Texas. The mathematical version of this property is known as sensitive dependence. However, it turns out that sensitive dependence is somewhat old news, so some of the implications flowing from it are perhaps not such “big news” after all. Still, chaos studies have highlighted these implications in fresh ways and led to thinking about other implications as well. -/- In addition to exhibiting sensitive dependence, chaotic systems possess two other properties: they are deterministic and nonlinear (Smith 2007). This entry discusses systems exhibiting these three properties and what their philosophical implications might be for theories and theoretical understanding, confirmation, explanation, realism, determinism, free will and consciousness, and human and divine action. (shrink)

From Inception to The Lake House, moviegoers are increasingly flocking to narratologically complex puzzle films. These puzzle movies borrow techniques--like fragmented spatio-temporal reality, time loops, unstable characters with split identities or unreliable narrators--more commonly attributed to art cinema and independent films. The essays in Hollywood Puzzle Films examine the appropriation of puzzle film techniques by contemporary Hollywood dramas and blockbusters through questions of narrative, time, and altered realities. Analyzing movies like Source Code, The Butterfly Effect, Donnie Darko, Déjà (...) Vu, and adaptations of Philip K. Dick, contributors explore the implications of Hollywood's new movie mind games. (shrink)

This essay presents some thoughts on schizoanalysis and visual culture around the proposition that cinema survives in the digital age as a type of image that, after the movement-image and the time-image, could be called the neuro-image. By considering clinical schizophrenia as ‘degree zero’ of schizoanalysis in a more critical sense, a reading of The Butterfly Effect unfolds the temporal dimensions of schizoanalysis as typical for a definition of ‘the neuro-image’. The argument is that the neuro-image speaks from (...) the (always speculative) future. (shrink)

Economic forecasting is famously unreliable. While this problem has traditionally been blamed on theories such as the efficient market hypothesis or even the butterfly effect, an alternative explanation is the role of money – something which is typically downplayed or excluded altogether from economic models. Instead, models tend to treat the economy as a kind of barter system in which money's only role is as an inert medium of exchange. Prices are assumed to almost perfectly reflect the 'intrinsic (...) value' of an asset. This paper argues, however, that money is better seen as an inherently dualistic phenomenon, which merges precise number with the fuzzy concept of value. Prices are not the optimal result of a mechanical, Newtonian process, but are an emergent property of the money system. And just as quantum physics has its uncertainty principle, so the economy is an uncertain process which can only be approximated by mathematical models. Acknowledging the dynamic and paradoxical qualities of money changes our ontological framework for economic modelling, and for making decisions under uncertainty. Applications to areas of risk analysis, forecasting and modelling are discussed, and it is proposed that a greater appreciation of the fundamental causes of uncertainty will help to make the economy a less uncertain place. (shrink)

A dynamical system is called chaotic if small changes to its initial conditions can create large changes in its behavior. By analogy, we call a dynamical system structurally chaotic if small changes to the equations describing the evolution of the system produce large changes in its behavior. Although there are many definitions of “chaos,” there are few mathematically precise candidate definitions of “structural chaos.” I propose a definition, and I explain two new theorems that show that a set of models (...) is structurally chaotic if it contains a chaotic function. I conclude by discussing the relationship between structural chaos and structural stability. (shrink)

Historical analysis and policy making often require counterfactual thought experiments that isolate hypothesized causes from a vast array of historical possibilities. However, a core precept of Jervis's “systems thinking” is that causes are so interconnected that the historian can only with great difficulty imagine causation by subtracting all variables but one. Prediction, according to Jervis, is even more problematic: The more sensitive an event is to initial conditions (e.g., butterfly effects), the harder it is to derive accurate forecasts. Nevertheless, (...) if awareness of system effects can help forecasters better calibrate their probability estimates of whether or not certain events will come to pass, systems thinkers who are pessimistic about prediction are diluting their confidence too much. The challenge is a meta-cognitive one: thinking systematically about when to engage in systems thinking; and weighing the costs and benefits of using simple or complex heuristics in policy environments that can shift suddenly from quiescence to turbulence. (shrink)

This article uses an autobiography as an object of research, to both illustrate some principles of chaos theory in analytic practice, and give those ideas a personal and social context, thereby producing a unique but explanation-rich history of chaos theory and recent intellectual history of transdisciplinarity and social research in the West. The ideas from Chaos Theory it uses and illustrates include: three-body analysis (Poincaré); fractals (Mandelbrot); fuzzy logic (Zadeh); and the butterfly effect (Lorenz).

Between Calculability and Non-Calculability. Issues of Calculability and Predictability in the Physics of Complex Systems. The ability to predict has been a very important qualifier of what constitutes scientific knowledge, ever since the successes of Babylonian and Greek astronomy. More recent is the general appreciation of the fact that in the presence of deterministic chaos, predictability is severely limited (the so-called ‘butterfly effect’): Nearby trajectories diverge during time evolution; small errors typically grow exponentially with time. The system obeys (...) deterministic laws and still is unpredictable, seemingly a paradox for the traditional viewpoint of Laplacian determinisms. With the concept of deterministic chaos the epistemological issue about an adequate understanding of predictability is no longer just a mere philosophical topic. Physicists on the one hand recognize the limits of (long term) predictability, computability and even of scientific knowledge, on the other hand they work on concepts for extending the horizon of predictability. It is shown in this paper that physics of complex systems is useful to clarify the jungle of different meanings of the terms ‘predictability’ and ‘computability’ — also with philosophical implications for understanding science and nature. Today, from the physical point of view, the relevance of the concepts of predictability seems to be underestimated by philosophers as a mere methodological topic. In the paper I analyse the importance of predictability and computability in physics of complex systems. I show a way how to cope with problems of unpredictability and noncomputability. Nine different concepts of predictability and computability (i.e. open solution, sensitivity/chaos, redundancy/chance) are presented, compared and evaluated. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Chaos and LiteratureCarl Matheson and Evan KirchhoffIChaos theory was the intellectual darling of pop-science writers of the late 1980s. 1 In their eyes, it would provide a new paradigm by which to describe the world, one that liberated scientists from clockwork determinism—or, alternatively, from incomprehensible randomness. In an introductory textbook of the period, Robert Devaney called chaos theory “the third great scientific revolution of the 20th century, along with (...) relativity and quantum mechanics.” Similar attitudes propagated into philosophy; for example, Stephen Kellert argued that an acceptance of chaos theory would involve a reconfiguration of scientific methodology. 2It was in the domain of literary theory, however, that chaos found its most enthusiastic reception in the humanities, and the enthusiasm lives on. Many literary theorists display no hesitation in touting the supposedly revolutionary implications of chaos science. Katherine Hayles, the chief among them, argues that because the concept of order has undergone a “radical reevaluation” in recent decades, “textuality is conceived in new ways within critical theory and literature, and new kinds of phenomena are coming to the fore within an emerging field known as the science of chaos” (CO, p. 1). She infers that the new “paradigm of orderly disorder” (CB, p. xiii) represented by chaos theory signifies a conceptual revolution in modern culture as a whole. 3 She attempts to establish a parallel between chaos theory and various poststructuralist philosophical positions, including those of Derrida and Foucault, claiming that this new paradigm “may well prove to be as important to the second half of the century as the field concept was to [End Page 28] the first half” (CB, p. xiii), and that chaos may soon be “on a par with evolution, relativity, and quantum mechanics in its impact on the culture” (CO, p. 4). Other theorists make claims for the interpretive power of chaos; according to William Demastes, “chaos theory can help in comprehending several paths that the theatre has followed since the inception of postmodernism” (p. 242). 4 By a conservative estimate, over fifty papers have been published which link chaos theory to literature or literary theory. Clearly, the idea that chaos theory has application outside of science is not restricted to one or two over-eager humanists.In this essay, we wish to address some of the claims which concern the relationship between chaos science and the study of literature. Three such claims are:a. There are significant similarities between the science of chaos, contemporary literary theory, and/or philosophy.b. We can trace a common etiology for chaos theory and poststructuralist criticism. The two are so intimately related that they are really different formulations of a common claim, as filtered through two different fields.c. The science of chaos can help us interpret and understand specific literary works, and perhaps contemporary literature in general.However, before assessing the relationship between chaos and literature, we will briefly introduce chaos theory itself and demonstrate that even a minimal understanding is sufficient to undercut the supposed revolutionary significance of chaos theory. 5IIChaotic systems are deterministic: an exact description of a system at any given time, together with the laws of nature that apply to it, will entail the entire future behavior of the system. In this sense, chaotic systems form a subclass of classical systems (and are to be distinguished from quantum systems, which are indeterministic). However, chaotic systems differ from the systems studied throughout most of the history of science in two major ways. First, the differential equations used to model them are nonlinear, while the history of mathematical physics is largely devoted to a treatment of linear differential equations. Technical issues aside, the ramifications of nonlinearity are: (i) equations which are impossible to solve using the general strategies designed for [End Page 29] linear equations; and consequently (ii) the need for solutions by methods of numerical approximation, generally performed on a computer. Second, chaotic systems exhibit a feature known as “sensitive dependence”—or, more colorfully, as “the butterfly effect,” a figure of speech intended to evoke the worry that our long-term forecasts of the weather can be hopelessly disrupted by the atmospheric fluctuations due to a single butterfly... (shrink)

Contemporary complexity sciences claim a literal, non-metaphorical applicability to physical, economic, social and cultural events. They envision the development of a general social or historical physics. Conversely, in the social sciences and humanities, complexity sciences have been typically treated as a source of new metaphors or tropes to be used in theory-building. Can there be a critical social or historical physics that is not a world-view and that does not treat science as a source of metaphors? The Lorenz attractor figures (...) centrally in the history of complexity science as a popular image of ‘deterministic chaos’ and the ‘butterfly effect’, as an indication of how far complexity science has progressed in the last two decades, and, as this article argues, as an event whose multiplicity of interpretations attests to the problem it raises, the problem of generality associated with complexity. Via the Lorenz attractor, the article examines three attempts to treat complexity non-metaphorically in recent theoretical work. In these accounts, the attractor performs several different functions. It forms part of a re-engineered concept of multiplicity, it helps conceptualize feeling or sensitivity, and it raises the general problem of practice in theory-building. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Art and Evolution:Spiegelman's The Narrative CorpseBrian BoydIHas art evolved, like opposable thumbs and the whites of our eyes? If it has, will knowing so help us understand better not just art in general but particular works, even works of avant-garde art? Over recent decades many have come to accept that not only have humans evolved from other animals but that many features of their minds and behavior can be (...) explained by the deep past of evolution.1 Yet art remains a puzzle for biocultural analysis. How can we explain art in the hard-nosed terms of biological advantage, especially if it lacks analogies or precursors in other species and seems so pleasurably part of being distinctly human?2Nevertheless we have good reasons to examine whether art might be an adaptation. All cognitively normal individuals in all known societies engage in some form of art, actively or at least passively: music and dance, story, visual art. No one has to be pressured into listening to music on a radio or an iPod. And like language but unlike reading and writing, art develops reliably to a basic level without special training.Art could be what evolutionary biologists call a byproduct, a mere side-effect of our bigger brains or of culture. Yet that seems unlikely. Byproducts by definition do not offer advantages in terms of survival and reproduction: a bodily or behavioral feature whose design offers such advantages we classify as an adaptation. But if art were a byproduct, if it offered on average no advantage in terms of survival and reproduction, many generations of intense evolutionary competition would have eliminated it. If art offered no benefits but exacted the costs it does in time, [End Page 31] energy and resources, it would over many generations have been selected against through the superior fitness of those less inclined to pay such costs, those who preferred to devote their time and energy to securing material or social advantage or simply to save energy by resting.We can understand art in all its varieties, I suggest, as cognitive play with pattern, with multiple, high-intensity patterns. Play exists throughout much of the animal kingdom: in all mammals in which it has been looked for, in birds, and even in invertebrates like octopi. Play, like sleep and dreaming, puzzles and fascinates biologists because it is so widespread and so highly conserved (evolutionary lineages in which play has arisen do not lose it as they continue to evolve) that it must fulfill some function, because it has high costs in energy and risk, and because its functions are not as evident as those of "serious" behavior.3The amount of play in a species correlates highly with the flexibility of its behavior. In all species in which it occurs, play seems remarkably self-rewarding. Animals like pigs and rats play compulsively. In fact this seems the core of play: the self-rewarding nature of play makes animals engage in exuberant, intense behaviors that, under conditions of relative security, allow them to extend their capacities and improve their competence in situations of minimal risk. The skills honed will prove of advantage in real world situations where it is too late to learn on the job, in situations like fight or flight. Because play is compulsive, animals engage in it again and again, incrementally altering their neural wiring, strengthening and speeding up synaptic pathways, improving their capacity and performance.Humans uniquely inhabit what has been called "the cognitive niche":4 we gain most of our advantages from intelligence. We have an appetite for information, and especially for pattern, for information that falls into meaningful arrays from which we can make rich inferences. We therefore like bright, distinct colors, crisp outlines, complex shape or surface design: think of our special fondness for butterflies and flowers. And we have an appetite for open-ended pattern, new kinds of patterns, not only the patterns we have evolved to detect automatically. Vervet monkeys signal to one another in different ways when they see snakes, or leopards, or eagles, because they need to react in different ways to different threats, but they never learn to associate... (shrink)

Beyond their linguistic and rhetorical uses, the mental epistemic verbs to knowand to believe reveal a basic conceptual system for human intentionality and the theory of representational mind. Numerous studies, particularly in the field of child development, have been devoted to the conditions under which knowledge and belief are acquired. Upstream of this empirical approach, this paper proposes a topological model of the conceptual structure underlying the linguistic use of to know and to believe. A cusp model of catastrophe theory (...) is chosen to model the formation of epistemic states. Its main characteristic is considering to believe as an intermediate state which lacks stability and presents the delayed effect of hysteresis. The attribution of mental states to the other (viewpoint of the third person) is obtained by the crossing of first and third person knowledge and belief, which gives rise to new categories (to know if and to falsely believe) and closes the system. Another merging of the beliefs of persons A and B, using the butterfly catastrophe, provides a model of interpersonal belief appreciated by an independent observer along a potential evolving from agreement to disagreement. (shrink)

This book consists of a dialogue between two interlocutors, Pablo and a student, who discuss a great range of issues in social philosophy and political theory, and in particular, the emergence, working properties and economic effects of institutions. It uses the dialogical form to make philosophy more accessible, but also to show how ideas develop through intellectual interaction. The fact that one of the interlocutors is the "student" in a place in the real world makes the dialogue quasi-fictive in character (...) and enables the active engagement of the reader. After all, we are all philosophers and we develop our own philosophy by exchanging views and arguments. The dialogue form is and should remain the principal form of philosophizing, since ideas, like butterflies, do not merely exist – they develop. This is certainly the case in actual philosophical interaction, and it can be the case in written philosophical exposition. Although the dialogue does not presuppose prior acquaintance with the respective philosophical and social scientific literature under discussion in this book, it makes arguments more accessible, and conveys the feeling that there are no definite solutions to philosophical problems. (shrink)

This piece, included in the drift special issue of continent. , was created as one step in a thread of inquiry. While each of the contributions to drift stand on their own, the project was an attempt to follow a line of theoretical inquiry as it passed through time and the postal service(s) from October 2012 until May 2013. This issue hosts two threads: between space & place and between intention & attention . The editors recommend that to experience the (...) drifiting thought that attention be paid to the contributions as they entered into conversation one after another. This particular piece is from the BETWEEN INTENTION & ATTENTION thread: Jeremy Fernando, Sitting in the Dock of the bay, watching... * R.H. Jackson, Reading Eyes * Gina Rae Foster, Nyctoleptic Nomadism: The Drift/Swerve of Knowing * Bronwyn Lay, Driftwood * Patricia Reed, Sentences on Drifitng * David Prater, drift: a way * * * * "… to sleep perchance to dream " 1 To dream: to be not quite asleep, yet not particularly awake. Or, rather: to be awake but not quite know it. For, it is only when we dream, when we are dreaming, that we know that we are not in that final sleep. But we can only know that we are dreaming, that we have dreamt, when we are awake, when we have awoken; after it is too late. When all we know is that the sleep beyond finitude, the sleep that is the step beyond, is not yet upon us, is only to come. To die to sleep … To dream: a sleep that refuses sleep. Perchance to dream: to drift—between sleep and sleep. Aye there's the rub For, can we even know if we have been sleeping? Or, if death has claimed us?—even if a little death. α Ω α Ω α Ω To drift: but from, to, what? For, to drift implies a certain direction that one was headed from, heading to, headed for; without these indications, markers, points in relation with each other, one would just be moving. Can one know—intend—one's drift? Certainly a stunt driver would say so. But even as (s)he is starting her slide, all that (s)he can know is that she is setting the car, herself, the car with herself in it, in motion: after which the drift itself takes over. After which, all (s)he can do is attend to it. At the point of the drift: both (s)he and the car are drifting—here, one might not even be able to separate the movement from those involved in it. Without either of them, there would not be a drift; there is no drifting without the drifter. Both the drifter and the drifting are in a relationality; in which, all that they can know is that they are in relation with each other. Hence, the drift itself is a relationality. A non-essence. But, it is not as if we cannot speak of it. Perhaps though: we can only speak of it as if we can speak of it. Always already an imaginary gesture; where what is being imagined is the relationality between the drift and the ones drifting. Thus, we have a situation where the drifter and drifting are in a relationality; where relationality itself is what is being imagined. Perhaps then, what are we drifting from, to? , is a moot question. As is, what is drifting? Perhaps then, all we can say is drift? To speak of drift is an attempt to speak of the unspeakable. Not that what is speakable and what is unspeakable are antonyms: if that were so, speaking the unspeakable would make no sense, be a contradiction. But that in every act of speaking, something unspeakable is potentially said: something that opens, ruptures, wounds even. And not just that—at the point where it punctures, speaking itself moves out of the way for the unspeakable; speaking itself disappears. "… the whole art is to know how to disappear before dying, and instead of dying. " 2 To disappear; or, to drift out of sight. Where the words themselves slip away. After all: "in the Beginning was the Word. It was only afterwards that Silence came." Perhaps the wish, the hope, is that "the end itself has disappeared …" (Baudrillard, 70) Remaining hidden from us. Perhaps only glimpsed when we dream. Secret. α Ω α Ω α Ω " Bury all your secrets in my skin " (Corey Taylor) Which is the problem: words cling. And they remain. Perhaps not ontologically; but they certainly remain to haunt us. And here, we should not forget Lucretius' lesson that communication occurs in the skin between the parties in communion with each other. Which is not to say that the encounter is determined by atoms—and more precisely atoms that move in straight lines until they collide with each other—that communication is pre-determined. For, one must not forget that will is found, discovered, enacted even, at the moment the atoms swerve. Clinamen . Drift. But even in their movement—drifting—they trace themselves into the skin between; a tangential touching. Perhaps only briefly. But even then, enough … "… there's always texture that betrays the place." (May Ee Wong) Here though, one must not forget that betrayal cannot happen in the absence of love. In fact, betrayal is the very excess of love: where one loves the other so much that one can no longer bear to see the other drift from what (s)he could have been. Whether that idealised other exists or is only in one's head is another question altogether. Perhaps, a fetishised other: keeping in mind that "fetishes are hinged around simulation." After all, "when one is supposed to show up as an oil rig diver no one is expecting actual crude oil" (Amanda Sordes); in fact, actualisation is the perfect way to destroy the fantasy. Perhaps then, the only way to maintain love for another is to maintain a proper distance, as it were, from love: allow the love to constantly alter, change. And here, one must not forget that if love is a relationality between one and another who remains wholly other (otherwise just a mere manifestation of the self), love is a relationality that knows nothing except for the fact that it is in a relation. For, to love one has to attend to—without subsuming another, some other, under oneself. Which means that to love, one has to be willing to risk, to open oneself, to allow oneself to be wounded, torn apart. In new ways, ways that we have yet to understand, come across, ways we do not yet have a name for. Thus, this movement in love is one that occurs in utter blindness; to not only the other, but to what love is. This is love as pure drifting. Perhaps always searching for love itself, without ever knowing what it is that it is looking for. Love: only at the very moment when the word love itself disappears. Perhaps all we can do is sit, and attend: watching the tides flowing away—as if they were having their "last swim of the summer." (Hendrik Speck) Like a butterfly. α Ω α Ω α Ω Isn't it quite amazing how the appearance of a butterfly can inject a stutter or pause into any conversation? Words and words pour out of the animals in assembly, before they are all of a sudden arrested by the passing flight. Heads turn to trace a lilting poetics, attempting to close the distance with this seemingly awkward beauty. There are no straight lines here, only a relative arrival and departure to bracket a brilliant and bewildering trajectory, surging and lurching in a vibrating and nomadic line avant la lettre. (Sean Smith, 'I Seek You: Countdown to Stereoscopic Tear') Before the letter. Before the possibility of naming. Before being sayable. Quite possibly also before language. And yet, a "surging and lurching," a movement with an effect—"vibrating and nomadic"—tracing itself before there is even anything to trace. Leaving something, even if that thing remains unknowable, for us to attend to. Drifting into us. I had some dreams they were clouds in my coffee, clouds in my coffee..." (Carly Simon) NOTES William Shakespeare, Hamlet , Act 3 Scene 1. Jean Baudrillard, Why hasn't everything already disappeared? , 25.  . (shrink)

This issue starts from a conviction that globalization is inevitable, and in this process, we journey together. Globalization for East Asia once meant Westernization, or less geographically specific, universal modernization. However, it became apparent that globalization cannot be simply defined in terms of assimilation and univocality, as insoluble disputes and radical differences in all aspects of life still occur and reoccur. Nonetheless, dialogue and interaction have been happening more frequently on a larger scale, even if sometimes concurrently appearing in the (...) form of miscommunication. Scientists question if the flap of a butterfly’s wings in Brazil can set off a tornado in Texas while poets contemplate whether one falling leaf of a Chinese parasol informs the change of seasons in the whole world. From Turin to Wuhan, when our living conditions have never been more effectively integrated than they are now, it requires us not only to think more correlatively, but also to understand locality in a larger context from a holistic perspective. (shrink)

Dramatic modern advances in emergency and resuscitation medicine, starting perhaps with the development of effective mechanical ventilators in the mid-20th century, have created a large class of persons who in earlier times would almost certainly have died, but who can now go on existing, suspended at least temporarily in a state somewhere between death and the conscious life they formerly pursued. A very wide range of brain injuries lead first to coma, in which the patient shows no sign of conscious (...) awareness, or even of wakefulness, in which eye openings and closings indicate the presence of a sleep/wake cycle unconsciously mediated by structures in the brain stem. Following emergence from coma, which may take days to months or more if it happens at all, patients typically show signs of wakefulness without conscious awareness – they are then in a so-called vegetative state (VS). For many this state becomes permanent, but some go on to a more recently described condition called the minimally conscious state (MCS), in which signs of conscious awareness can be detected by careful neurological examination (see Laureys & Tononi, 2009, chapter 14). A very few such persons ultimately progress to more or less full recovery, but another and particularly horrifying possible outcome is the “locked-in” state, in which a patient is fully conscious but has extremely little or no capacity for voluntary motor action. A famous modern example is that of Jean-Dominique Bauby, author of The Diving Bell and the Butterfly, who suffered a stroke to his upper brainstem and awakened 20 days later to find himself fully conscious but capable only of blinking his left eye. A tiny fraction of surgical patients find themselves in similarly terrifying conditions caused by the combination of muscle relaxants with insufficient levels of anesthetic agents (Kelly et al., 2007, p. 387 n. 18). (shrink)

Prior to this intervention the site used to be a degraded fiscal property, that functioned as a bus yard, a police legal deposit, and a restaurant parking lot. Underneath it runs the Maldonado stream culvert, covered by a concrete slab at a depth of only -20cm. Next to the site is a 5m high railroad embankment. The plot is strategically located at the end of Juan B. Justo avenue and works as a gateway to the Tres de Febrero park (also (...) known as Bosques de Palermo, the Buenos Aires’s biggest green space designed by Charles Thays in 1875). It is situated in the neighborhood of Palermo, an area that underwent a vertiginous residential and commercial expansion since the late 90´s. -/- The design approach is influenced by the adjacent urban fragments: the grounds of the Sociedad Rural Argentina, the surrounding Avenues Santa Fe-Sarmiento; the opening of Darregueyra street expected for the near future, the implementation of historic preservation guidelines for the Tres de Febrero Park, and the proposal for the development of nearby railroad yards. -/- Specifically, the project seeks to minimize the impact of the fast traffic that runs along Bullrich avenue, improving pedestrian and cycle access to the park. At the same time it defines new landscape features, utilizing the earth made available by the tunneling works of a new subway line. -/- The project comprises the structuring of an existing 800 meter long embankment and the transformation of the sidewalk into a public promenade. This is achieved through a wider sidewalk of 12m on average, which is part of a series of longitudinal stripes ranging from high speed to quiet spaces. The first band of grass and aged tipas (tipuana tipu) buffer pedestrian and cyclist from automotive traffic. Cycle traffic is organized on its own lane. The sidewalk itself contains several bays that act as urban lounges. Next, a continuous concrete bench delimits the beginning of the slope, backed by a stripe of grass that works as a soft extension. Finally, plants for contemplation are arranged as undulating traces. Rhythmic use of retaining gabions defines longitudinal segments of varying slope, unifying the spacial criterion. This series is punctuated by an amphitheater and framed by triangular plazas at the corners. -/- Material choices for hard surfaces are constrained by concerns of durability, low cost, and consistency with other ongoing public works. -/- Hard materials, as well as the plant selection needed to be low-maintenance. The palette was kept to reinforced concrete, granitic slabs, and granite stone in large size –forming retaining gabions- and as loose finishing for pavements. Likewise, the lack of a protective enclosure and of continuous surveillance dictated that urban furniture and fixtures be anti-vandalic. The stealing of these components –from inspection lids, to benches, to plants- is a common problem in urban spaces in many Latin American cities. To prevent this, fixtures must be designed according to precise specifications regarding their weight, fixing and anchoring systems, and mechanical parts. -/- Sidewalks are organized through a 6 meter grid made of granitic white slab, infilled with textured combed nonslip concrete modules. Extended bays and corner squares are finished with white and black slabs respectively. These materials are similar to another used in public spaces under construction, in the believe that it creates a collective identification of themselves along the city. -/- The continuous reinforced concrete bench is 1.10 m wide, in order to allow people to use it in non-conventional ways. Further up on the slope, undulating paths separate plant species and provide access for gardening, but are also open to use by the public. They are paved with 2 meter-long precast concrete slabs (smaller and lighter pieces were avoided to deter robbery). As they reach the gabions they connect with sloping paths covered with loose granitic stones. The gabions themselves allow the creation of varying slopes while contributing to retaining the soil, which is reinforced with geosynthetic fabric in the perimeter to avoid landslides originated by strong rains typical of the region. -/- Urban furniture is featured on the wider bays of the sidewalk and at corner plazas. It includes seats, water fountains, bicycle racks, wastepaper baskets. As a counterpoint to the linear concrete bench, groups of concrete seats are arranged informally. These seats are a reinterpretation of the dynamic BKF chair (also known as Butterfly chair), the classic Argentinean design of the 1930’ by Antonio Bonet, Juan Kurchan, and Jorge Ferrari-Hardoy. A few low concrete tables complete these spaces as authentic urban lounges. Lighting design accompanies the general features of the project and creates a new scenography emphasizing night-time usage. -/- Landscape gardening criteria is set up by a selection of various species of high-resistant pasture (grass). The higher the slope, the higher the grass, increasing the final volumetric result. Based on considering the original tipas line (tipuana tipu, a species from the north of Argentina, yellow flowering) as a vertical wall that frames the view, the horizontal stripes contain a single species each, differing in size, shade and flowering periods –adding, in the middle band, a changing color on the big green plane slope in the same chromatic range. The final configuration of the stripe sequence from bottom to top: bermuda grass, bulbine frutescens, euryops pectinatus. The upper band existing native species is reinforced with new samples: paspalum exaltatum + cortadera selloana and ipomea + thumbergia climbing the railway fence. Each sector between gabions has an automated system of drip irrigation. Near the corner plazas, several palms are planted to provide shade and identity to the street-crossing. -/- The intervention proposes an ambivalent effect on the landscape, trascending the merely ornamental by accompanying the motorist in speed, while conforting the pedestrian with spaces for contemplation and urban relax. (shrink)

Recently, big data analytics have gained significant attention in healthcare industry due to generation of massive quantities of data in various forms such as electronic health records, sensors, medical imaging, and pharmaceutical details. However, the data gathered from various sources are intrinsically uncertain owing to noise, incompleteness, and inconsistency. The analysis of such huge data necessitates advanced analytical techniques using machine learning and computational intelligence for effective decision making. To handle data uncertainty in healthcare sector, this article presents a novel (...) metaheuristic rough set-based feature selection with rule-based medical data classification technique on MapReduce framework. The proposed MRSFS-RMDC technique designs a butterfly optimization algorithm for minimal rough set selection. In addition, Hadoop MapReduce is applied to process massive quantity of data. Moreover, a rule-based classification approach named Repeated Incremental Pruning for Error Reduction is used with the inclusion of a set of conditional rules. The RIPPER will scale in a linear way with the number of training records utilized and is suitable to build models with data uncertainty. The proposed MRSFS-RMDC technique is validated using benchmark dataset and the results are inspected under varying aspects. The experimental results highlighted the supremacy of the MRSFS-RMDC technique over the recent state of art methods in terms of different performance measures. The proposed methodology has achieved a higher F-score of 96.49%. (shrink)

The diversity in colour patterns on butterfly wings provides great potential for understanding how developmental mechanisms may be modulated in the evolution of adaptive traits. In particular, we discuss concentric eyespot patterns, which have been shown by surgical experiments to be formed in response to signals from a central focus. Seasonal polyphenism shows how alternate phenotypes can develop through environmental sensitivity mediated by ecdysteroid hormones, whereas artificial selection and single gene mutants demonstrate genetic variation influencing the number, shape, size, (...) position, and colour composition of the eyespots. The expression patterns of the regulatory gene Distal-less reveal that these changes can arise at several different developmental stages, and the phenotypes indicate that some forms of changed pattern may occur much more readily than others. Further study of the genes, of the developmental mechanisms, and of the functions of the patterns will provide novel insights about the evolution of morphological diversity. BioEssays 21:391–401, 1999. © 1999 John Wiley & Sons, Inc. (shrink)

Zhuangzi chooses a butterfly as a metaphor for transformation, a sighted creature whose inherent nature contains, and symbolizes, the potential for transformation from a less valued state to a more valued state. If transformation is not to be valued; if, according to a recent article by Jung Lee, 'there is no implication that it is either possible or desirable for the living to awake from their dream', why not tell a story of a mole awakening from a dream? This (...) would be a more perfect story. There would be no point of a mole awakening since (setting aside tactile, olfactory, auditory and taste sensations for the purpose of the example), there is no way to distinguish between the world of the mole's imagination and the real world that is forever unavailable to a mole. In addition, Zhuangzi relates the story of the coming of a great sage in which it is clearly stated that 'Only at the ultimate awakening shall we know that this is the ultimate dream'. Such textual evidence both from the choice of metaphors and evidential passages indicates that the message of the Zhuangzi is not epistemological relativity, but one of transformation from a state of intellectual blindness to a state of true understanding. (shrink)

This paper integrates genetical studies of variation in the wing patterns of Lepidoptera with experimental investigations of developmental mechanisms. Research on the tropical butterfly,Bicyclus anynana, is described. This work includes artificial selection of lines with different patterns of wing eyespots followed by grafting experiments on the lines to examine the phenotypic and genetic differences in terms of developmental mechanisms. The results are used to show how constraints on the evolution of this wing pattern may be related to the developmental (...) organisation. The eyespot pattrn can be envisaged as a set of developmental homologues; a common developmental mechanism is associated with a quantitative genetic system involving high genetic correlations. However, individual genes which influence only subsets of the eyespots, thus uncoupling the interdependence of the eyespots, may be important in evolutionary change. The postulated evolutionary constraints are illustrated with respect to differences in wing pattern found among other species ofBicyclus. (shrink)

In this paper, we present two proofs of the reciprocal butterfly theorem. The statement of the butterfly theorem is: Let us consider a chord PQ of midpoint M in the circle Ω(O). Through M, two other chords AB and CD are drawn, such that A and C are on the same side of PQ. We denote by X and U the intersection of AD respectively CB with PQ. Consequently, XM = YM. For the proof of this theorem, see (...) [1]. The reciprocal of the butterfly theorem has the following statement: In the circle Ω(O), let us consider the chords PQ, AB and CD which are concurrent in the point M≠O, such as the points A and C are on the same side of the line PQ. Let X and Y respectively be the intersections of the chord PQ with AD and BC respectively. If XM = YM, then M is the middle of the chord PQ. (shrink)

The diversity in colour patterns on butterfly wings provides great potential for understanding how developmental mechanisms may be modulated in the evolution of adaptive traits. In particular, we discuss concentric eyespot patterns, which have been shown by surgical experiments to be formed in response to signals from a central focus. Seasonal polyphenism shows how alternate phenotypes can develop through environmental sensitivity mediated by ecdysteroid hormones, whereas artificial selection and single gene mutants demonstrate genetic variation influencing the number, shape, size, (...) position, and colour composition of the eyespots. The expression patterns of the regulatory gene Distal-less reveal that these changes can arise at several different developmental stages, and the phenotypes indicate that some forms of changed pattern may occur much more readily than others. Further study of the genes, of the developmental mechanisms, and of the functions of the patterns will provide novel insights about the evolution of morphological diversity. BioEssays 21:391–401, 1999. © 1999 John Wiley & Sons, Inc. (shrink)

The particular fascination of butterfly wings for developmental biologists (and others) lies in their spectacular array of colour patterns. The evolutionary and developmental relationships between these patterns have been analysed and we know something of the cell interactions involved in their formation(1). Now butterfly homologues of Drosophila wing‐patterning genes have been identified, and their expression patterns offer the first clues to the molecular mechanisms which specify wing colour patterns(2).

The striking color patterns of butterflies and birds have long interested biologists. But how these animals see color is less well understood. Opsins are the protein components of the visual pigments of the eye. Color vision has evolved in butterflies through opsin gene duplications, through positive selection at individual opsin loci, and by the use of filtering pigments. By contrast, birds have retained the same opsin complement present in early-jawed vertebrates, and their visual system has diversified primarily through tuning of (...) the short-wavelength-sensitive photoreceptors, rather than by opsin duplication or the use of filtering elements. Butterflies and birds have evolved photoreceptors that might use some of the same amino acid sites for generating similar spectral phenotypes across 540 million years of evolution, when rhabdomeric and ciliary-type opsins radiated during the early Cambrian period. Considering the similarities between the two taxa, it is surprising that the eyes of birds are not more diverse. Additional taxonomic sampling of birds may help clarify this mystery. (shrink)

ABSTRACTThe ‘dream of the butterfly,’ which seals the second chapter of the Zhuangzi, is often interpreted as undergirded by the bipolarity of dreaming and awakening or by the elusive interchange of identities between Zhuangzi and the butterfly, dreamer and dreamed. In this paper I argue that the underlying structure of the story may be better interpreted as exhibiting not two, but three stages of development, consistently echoing other tripartite parables in the Zhuangzi. In my reinterpretation I rely on (...) the phenomenology of dreams proposed by the Spanish philosopher María Zambrano, which distinguishes among three states: the primal dream, characterized by atemporality and wholeness; wakefulness, characterized by temporality and analytic thinking; and the creative dream, in which reality discloses itself as a meaningful, holistic unity. I suggest that Zhuangzi’s parable describes a similar self-transformative threefold process culminating in the joyous freedom of a shifting multifaceted subjectivity centered in the timeless pivot of the Dao. (shrink)

In this article, a chapter from a more general study, the butterfly is considered as an arresting `index', highlighting the evolution of children's culture and the relationships between science and literature. Comparing Furetière's knowledge of this insect, as set out in his Dictionnaire universel (1690), to its literary representations in Charles Perrault's or Fénelon's tales, helps to assess the context in which children's literature came to be written within the higher circles of the Versailles Court society. It also explains (...) some aspects of the `Querelle des Anciens et des Modernes'. Flying the flag for modernism, the butterfly stands in rhetorical opposition to the industrious bee or `zephyr' of the pastoral and idyll, as a sign of liberated childhood. An epilogue shows that butterflies in contemporary writings for children offer a postmodern illustration of the baroque trend that was initiated in children's literature at the end of the 17th century, and impart a special flavour to some of the most popular tales and picture-books. (shrink)

Commentary on research on butterflies' eyespots as a model in evolutionary developmental biology.