Nine essays based on a series of public talks held in Melbourne in 1988. The contributors and the editor are academics and writers. They look at the work of such people as Roland Barthes, Jacques Derrida and Michel Foucault in terms of writing, reading and social context. Includes a symposium on uses of recent French theory and an index.

Work on a computer program called SMILE + IBP (SMart Index Learner Plus Issue-Based Prediction) bridges case-based reasoning and extracting information from texts. The program addresses a technologically challenging task that is also very relevant from a legal viewpoint: to extract information from textual descriptions of the facts of decided cases and apply that information to predict the outcomes of new cases. The program attempts to automatically classify textual descriptions of the facts of legal problems in terms of Factors, a (...) set of classification concepts that capture stereotypical fact patterns that effect the strength of a legal claim, here trade secret misappropriation. Using these classifications, the program can evaluate and explain predictions about a problem’s outcome given a database of previously classified cases. This paper provides an extended example illustrating both functions, prediction by IBP and text classification by SMILE, and reports empirical evaluations of each. While IBP’s results are quite strong, and SMILE’s much weaker, SMILE + IBP still has some success predicting and explaining the outcomes of case scenarios input as texts. It marks the first time to our knowledge that a program can reason automatically about legal case texts. (shrink)

Causality in Macroeconomics examines causality while taking macroeconomics seriously. A pragmatic and realistic philosophy is joined to a macroeconomic foundation that refines Herbert Simon's well-known work on causal order to make a case for a structural approach to causality. The structural approach is used to understand modern rational expectations models, regime switching models, Granger causality, vector autoregressions, the Lucas critique, and concept exogeneity. Techniques of causal inference based on patterns of stability and instability in the face of identified regime changes (...) are developed and illustrated in two empirical case studies. (shrink)

The research described here explores the idea of using Supreme Court oral arguments as pedagogical examples in first year classes to help students learn the role of hypothetical reasoning in law. The article presents examples of patterns of reasoning with hypotheticals in appellate legal argument and in the legal classroom and a process model of hypothetical reasoning that relates them to work in cognitive science and Artificial Intelligence. The process model describes the relationships between an advocate’s proposed test for deciding (...) a case or issue, the facts of the hypothetical and of the case to be decided, and the often conflicting legal principles and policies underlying the issue. The process model of hypothetical reasoning has been partially implemented in a computerized teaching environment, LARGO (“Legal ARgument Graph Observer”) that helps students identify, analyze, and reflect on episodes of hypothetical reasoning in oral argument transcripts. Using LARGO, students reconstruct examples of hypothetical reasoning in the oral arguments by representing them in simple diagrams that focus students on the proposed test, the hypothetical challenge to the test, and the responses to the challenge. The program analyzes the diagrams and provides feedback to help students complete the diagrams and reflect on the significance of the hypothetical reasoning in the argument. The article reports the results of experiments evaluating instruction of first year law students at the University of Pittsburgh using the LARGO program as applied to Supreme Court personal jurisdiction cases. The learning results so far have been mixed. Instruction with LARGO has been shown to help law student volunteers with lower LSAT scores learn skills and knowledge regarding hypothetical reasoning better than a text-based approach, but not when the students were required to participate. On the other hand, the diagrams students produce with LARGO have been shown to have some diagnostic value, distinguishing among law students on the basis of LSAT scores, posttest performance, and years in law school. This lends support to the underlying model of hypothetical argument and suggests using LARGO as a pedagogically diagnostic tool. (shrink)

Elliot Sober ([2001]) forcefully restates his well-known counterexample to Reichenbach's principle of the common cause: bread prices in Britain and sea levels in Venice both rise over time and are, therefore, correlated; yet they are ex hypothesi not causally connected, which violates the principle of the common cause. The counterexample employs nonstationary data—i.e., data with time-dependent population moments. Common measures of statistical association do not generally reflect probabilistic dependence among nonstationary data. I demonstrate the inadequacy of the counterexample and of (...) some previous responses to it, as well as illustrating more appropriate measures of probabilistic dependence in the nonstationary case. A challenge to the principle of the common causeSober's argument and the attempts to rescue the principleProbabilistic dependenceNonstationary time seriesProbabilistic dependence in nonstationary time seriesDo Venetian sea levels and British bread prices violate the principle of the common cause? (shrink)

This book is a collection of secondary essays on America's most important philosophic thinkers—statesmen, judges, writers, educators, and activists—from the colonial period to the present. Each essay is a comprehensive introduction to the thought of a noted American on the fundamental meaning of the American regime.

Recent debates over the nature of causation, casual inference, and the uses of causal models in counterfactual analysis, involving inter alia Nancy Cartwright (Hunting Causes and Using Them), James Woodward (Making Things Happen), and Judea Pearl (Causation), hinge on how causality is represented in models. Economists’ indigenous approach to causal representation goes back to the work of Herbert Simon with the Cowles Commission in the early 1950s. The paper explicates a scheme for the representation of causal structure, inspired by Simon, (...) and shows how this representation sheds light on some important debates in the philosophy of causation. This structural account is compared to Woodward’s manipulability account. It is used to evaluate the recent debates – particularly, with respect to the nature of causal structure, the identity of causes, causal independence, and modularity. Special attention is given to modeling issues that arise in empirical economics. (shrink)

Economics prefers complete explanations: general over partial equilibrium, microfoundational over aggregate. Similarly, probabilistic accounts of causation frequently prefer greater detail to less as in typical resolutions of Simpson’s paradox. Strategies of causal refinement equally aim to distinguish direct from indirect causes. Yet, there are countervailing practices in economics. Representative-agent models aim to capture economic motivation but not to reduce the level of aggregation. Small structural vector-autoregression and dynamic stochastic general-equilibrium models are practically preferred to larger ones. The distinction between exogenous (...) and endogenous variables suggests partitioning the world into distinct subsystems. The tension in these practices is addressed within a structural account of causation inspired by the work of Herbert Simon’s, which defines cause with reference to complete systems adapted to deal with incomplete systems and piecemeal evidence. The focus is on understanding the constraints that a structural account of causation places on the freedom to model complex or lower-order systems as simpler or higher-order systems and on to what degree piecemeal evidence can be incorporated into a structural account. (shrink)

In the eyes of its practitioners, economics is both a deductive science and an empirical science. The starting point of its deductions might be thought of as first principles. But what is the status of such principles? The tension between foundationalism, the idea that there are necessary and secure first principles for economic inquiry, and fallibilism, the idea that no belief can be certified as true beyond the possibility of doubt, is explored. Empirical disciplines require some sort of falsifiability. Yet, (...) empirical inquiries also require a starting place—if not a necessarily true one, at least an indubitable one, that is, one that is not actually doubted. Indubitability appears to have necessary consequences, undercutting fallibilism, while fallibilism threatens confidence in the de facto first principles that begin inquiry. This tension is examined in three well-known attempts to define economics and its method: John Stuart Mill’s economics as the science of wealth, Lionel Robbins’s economics as constrained optimization; and George Stigler and Becker’s attempt to reformulate neoclassical economics to square empiricism with Robbins’ deductivism. (shrink)

The difficulty of conducting relevant experiments has long been regarded as the central challenge to learning about the economy from data. The standard solution, going back to Haavelmo's famous “The Probability Approach in Econometrics” (1944), involved two elements: first, it placed substantial weight on a priori theory as a source of structural information, reducing econometric estimates to measurements of causally articulated systems; second, it emphasized the need for an appropriate statistical model of the data. These elements are usually seen as (...) tightly linked. I argue that they are, to a large extent, separable. Careful attention to the role of an empirically justified statistical model in underwriting probability explains puzzles not only in economics, but more generally with respect to recent criticisms of Reichenbach's principle of the common cause, which lies behind graph-theoretic causal search algorithms. And it provides an antidote to the pessimistic understanding of the possibilities for passive observation of causal structure in econometrics and related areas of Nancy Cartwright and others. (shrink)

Modern empirical macroeconomic models, known as structural autoregressions (SVARs) are dynamic models that typically claim to represent a causal order among contemporaneously valued variables and to merely represent non-structural (reduced-form) co-occurence between lagged variables and contemporaneous variables. The strategy is held to meet the minimal requirements for identifying the residual errors in particular equations in the model with independent, though otherwise not directly observable, exogenous causes (“shocks”) that ultimately account for change in the model. In nonstationary models, such shocks accumulate (...) so that variables have discernible trends. Econometricians have conceived of variables that trend in sympathy with each other (so-called “cointegrated variables”) as sharing one or more of these unobserved trends as a common cause. It is possible for estimates of the values of both the otherwise unobservable individual shocks and the otherwise unobservable common trends to be backed-out of cointegrated systems of equations. The issue addressed in this paper is whether and in what circumstances these values can be regarded as observations of real entities rather than merely artifacts of the representation of variables in the model. The issue is related, on the one hand, to practical methodological problems in the use of SVARs for policy analysis—e.g., does it make sense to estimate of shocks or trends in one model and then use them as measures of variables in a conceptually distinct model? The issue is also related to debates in the philosophical analysis of causation—particularly, whether we are entitled, as assumed by the developers of Bayes-net approaches, to rely on the causal Markov condition (a generalization of Reichenbach’s common-cause condition) or whether cointegration generates a practical example of Nancy Cartwright’s “byproducts” objection to the causal Markov condition. (shrink)

Although the relevance and importance of his work has been recognized only belatedly, Charles Sanders Peirce was, throughout his life, a careful student and significant contributor to the development of logic, scientific theory, and philosophy generally. Occasionally, complete appreciation of Peirce's efforts has been hampered because his work is often unique and, at times, highly idiosyncratic. Yet, we hope to show in this paper that for one aspect of his work in logic Peirce did not abandon the ordinary without purpose. (...) Only relatively recently have philosophers of science become interested in the logic of discovery - that is, in the logic of the selection of hypotheses to be tested rather than simply in the ways of testing hypotheses which have already been selected. (shrink)

While popular debate grapples with the legality of gay marriage, networks of medical, political, and juridical discourses produce and situate sexuality in a field of knowledge that is constantly under examination and administration. The rationalization of sexuality, and its dispersion into multiple fields of knowledge, has become part of a system of power relations that produces identities and manages them. Within this context, this paper places Horkheimer and Adorno's excursus on Sade's Juliette in conversation with Foucault's first volume of the (...) History of Sexuality. It explores how instrumental reason and power/knowledge relationships produce discourses of sexuality, which have come to dominate Western society. It also explores possible sites of resistance, through the notion of performativity, that exist within these modes of rationalization and power. I argue that this interlocution of Horkheimer and Adorno with Foucault helps us see sexuality as a site of both domination and resistance. It also shows how sexuality is produced in a field of contestation where possibilities of practices of freedom are always circumscribed by modes of rationalization and networks of power. (shrink)

Through most of the history of economics, the most influential commentators on methodology were also eminent practitioners of economics. And even not so long ago, it was so. Milton Friedman, Paul Samuelson, Trygve Haavelmo, and Tjalling Koopmans were awarded Nobel prizes for their substantive contributions to economics, and were each important contributors to methodological thought. But the fashion has changed. Specialization has increased. Not only has methodology become its own field, but many practitioners have come to agree with Frank Hahn's (...) (1992) view that methodology is a distraction to the practitioner, best left to the professional methodologists and philosophers, and of little practical import even when delivered from their pens. John Sutton's lectures, Marshall's Tendencies: What Economists Can Know, is a welcome return to the older fashion, for Sutton is an eminent practitioner of game theory and industrial organization. One of the main themes of these rich and nuanced lectures is the relationship of economic theory to econometric evidence. Sutton's reflections on econometrics appear to arise from the darker recesses of his practitioner's soul. While he affects a sunny disposition and ends on a hopeful note, his analysis articulates the lurking fear that econometrics is a hopeless project and that economics has little to learn from the interaction of theory and econometrics. Sutton's book is like a play in which virtue triumphs, but the villain gets all the good lines. (shrink)

Ethics and professional conduct are vital to civil engineering undergraduate curricula. Many programs struggle to ensure that students are given an adequate exposure to and appreciation of ethical and professional conduct issues. This paper describes a two-part ethics/professionalism project used in a senior-level course taught at the University of Arkansas. Initially, students scruitinize ethical canons and standards of professional conduct published by the American Society of Civil Engineers (ASCE) and the National Society of Professional Engineers (NSPE), and prepare an essay (...) concerning the applicability of these standards. The second part of the project builds on the first: based on the opinion(s) generated in Part 1, students are asked to develop a set of canons or standards targeted specifically to the undergraduate student, and suggest processes for implementing those standards within the department. Project objectives include: (1) exposure to nationally-recognized ethical canons and standards of professional conduct; (2) personal formulation of ethical and professional standards; (3) skill enhancement for non-technical written communications. Feedback by students prior to and after the project indicates success in meeting all objectives. The feedback also indicates that for some students, definitions and applications of ethics and professionalism are being broadened to include more than academic honesty issues. (shrink)

As a young boy, Jacques Henri Lartigue set about passionately recording his life in photographs, first documenting his domestic circle and later capturing the auto races, air shows, and fashionable watering holes of the Belle époque. His images have so bewitched modern viewers that even scholars have failed to see them clearly. In Jacques Henri Lartigue: The Invention of an Artist, Kevin Moore puts to rest the long-held myth of Lartigue as a naïve boy genius whose creations were based (...) on instinct alone. Moore begins by exploring the milieu in which Lartigue became a photographer, examining his father's crucial role in teaching him the latest techniques as well as the larger context of the turn-of-the-century craze for amateur photography. Two events brought Lartigue before the public eye in America and created the Lartigue myth: In the summer of 1963, the first exhibition of Lartigue's work in the United States was held at the Museum of Modern Art, which hailed him as an important modernist photographer, a forerunner of the art-documentary style of the 1960s. That fall, Life magazine published a feature presenting his work as an optimistic and sentimental prologue to World War I. Both treatments portrayed him as a naïve genius and Lartigue happily participated in shaping this new persona. In Jacques Henri Lartigue: The Invention of an Artist, Moore successfully challenges the Lartigue myth using examples from popular magazines and the cinema. Illustrated with more than fifty of Lartigue's photographs and drawings as well as press imagery from the period, the book offers a radical reassessment of the photographer and his work. (shrink)

In this short note, we discuss several aspectsof dimensions and the related constructof factors. We concentrate on those aspectsthat are relevant to articles in this specialissue, especially those dealing with the analysisof the wild animal cases discussed inBerman and Hafner's 1993 ICAIL article. We reviewthe basic ideas about dimensions,as used in HYPO, and point out differences withfactors, as used in subsequent systemslike CATO. Our goal is to correct certainmisconceptions that have arisen over the years.

This paper argues that professionals who make boundary-related decisions should be guided by relationship-based practice. In our roles as service users and professionals, drawing from our lived experiences of professional relationships, we argue we need to move away from distance-based practice. This includes understanding the boundary stories and narratives that exist for all of us – including the people we support, other professionals, as well as the organisations and systems within which we work. When we are dealing with professional boundary (...) issues, we should centre relationship-building skills that are central to many other aspects of our work. Skills that foster relationships at all levels – between professionals, service users, and services – need to be revalued. Our final recommendation is to create, develop, and foster safer spaces within and outside of organisations, as well as inter-professionally, for the discussion and exploration of boundary-related issues and practice. We are interested in hearing from those with experiences of being marginalised by boundaries so that they can inform a reshaping of our collective ideas around boundary related practices. To foster relationship-based practices in organisations, we have outlined several recommendations here; however, we recognize that these do not go far enough, and that collective action is needed to inform systemic change. (shrink)

This research provides a look at men doing gender in the highly feminized context of temporary clerical employment. Male clerical temporaries, as with other men who cross over into “women's work,” face institutionalized challenges to their sense of masculinity. In particular, male clerical temporary workers face gender assessment—highlighting their failure to live up to the ideals of hegemonic masculinity. The resulting gender strategies these men adopt reveal how male clerical temporary workers “do masculinity”—often in a collaborative performance shaped by the (...) gendered expectations of their agencies, their clients, and even themselves—to reassert the feminine identification of the job while at the same time rejecting its application to them. Paradoxically, rather than disrupting the gender order, the gender strategies used by these male clerical temporaries help to reproduce and naturalize the gendered organization of work and reinvigorate hegemonic masculinity and its domination over women and subaltern men. (shrink)

In the 2008 Instruction Dignitas personae (The Dignity of the Person), the Congregation for the Doctrine of the Faith presented once again the teaching of the Church on in vitro fertilization. Much of this teaching was contained in the earlier Instruction Donum vitae (The Gift of Life, 1987), but the new document brings the teaching of the Church up to date. Because the teaching is not accepted in the secular scientific community and is often unknown in the Catholic community, this (...) article explores the process of IVF, the view of the Church concerning it, and the fundamental principles underlying the Church’s teaching. National Catholic Bioethics Quarterly 10.4 (Winter 2010): 709–722. (shrink)

This article tracks Corporate Social Responsibility (CSR) as an emergent organizational process that places the employee at its center. Predominantly, research on CSR tends to focus on external pressures and outcomes leading to a neglect of CSR as a dynamic and developing process that relies on the involvement of the employee as a major stakeholder in its co-creation and implementation. Utilizing case study data drawn from a study of a large multinational energy company, we explore how management relies on employees' (...) interaction with CSR as the process of initiation → implementation → maturation develops. Employee involvement grows from a minor element in the CSR initiation stage to a vital contributory factor in CSR's success in the later stages of the process. The article offers new insights into a processual and interactional approach to CSR that accounts for the actions of different actors involved at each stage. Most unusually, it also recognizes the dual impact this has on broader issues concerning the management and involvement of employees through CSR actions, and gaining legitimacy in the eyes of not only external stakeholders but internal too. (shrink)

This response raises two critical questions about Nico Stehr's article 'Knowledge, Markets and Biotechnology.' First, it examines his claim that in a 'knowledge society' consumers now base their decisions about purchases on more intangible criteria than a product's utility. We demonstrate that this is not unique to a 'knowledge society.' For more than a century Western consumers have been enmeshed in markets where advertisers aim to fashion consumer desires for products by employing strategies that appeal to anything but a product's (...) 'use value.' Second, we address Stehr's claim that in a market undergoing a process of 'moralization,' decisions about consumption occur in a context of epistemological uncertainty caused by proliferating and contradictory information. We propose that such a situation of radical uncertainty in decision-making is not unique to the marketplace, but reflects how most individuals must now relate to almost all scientific claims. The propagation of contested knowledges about any number of scientific truths - which are themselves largely unverifiable by laypeople - means that most individuals must rely on assorted social and cultural considerations when aligning themselves with any scientific knowledge. (shrink)

This handbook offers a deep analysis of the main forms of legal reasoning and argumentation from both a logical-philosophical and legal perspective. These forms are covered in an exhaustive and critical fashion, and the handbook accordingly divides in three parts: the first one introduces and discusses the basic concepts of practical reasoning. The second one discusses the main general forms of reasoning and argumentation relevant for legal discourse. The third one looks at their application in law as well as at (...) the different areas of legal reasoning. The handbook’s division in three parts reflects its conceptual architecture, since legal reasoning and argumentation are considered in relation to the more general types of reasoning. (shrink)

Endothelial cells, when cultured on gelled basement membrane matrix exert forces of tension through which they deform the matrix and at the same time they aggregate into clusters. The cells eventually form a network of cord-like structures connecting cell aggregates. In this network, almost all of the matrix has been pulled underneath the cell cords and cell clusters. This phenomenon has been proposed as a possible model for the growth and development of planar vascular systems in vitro. Our hypothesis is (...) that the matrix is reorganized and the cellular networks form as a result of traction forces exerted by the cells on the matrix and the latter's elasticity. We construct and analyze a mathematical model based on this hypothesis and examine conditions necessary for the formation of the pattern. We show cell migration is not necessary for pattern formation and that isotropic, strain-stimulated traction is sufficient to form the observed patterns. (shrink)

Despite the lack of invariance problem (the many‐to‐many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side‐stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real‐world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to (...) provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two‐layer network that borrows one element from ASR, long short‐term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human‐like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR. (shrink)

In this review essay Kevin Murray and Dan Liston examine three texts in what this symposium has deemed the recent resurgence in neo-Marxist accounts of schooling: David Blacker's The Falling Rate of Learning and the Neoliberal Endgame, Mike Cole's Marxism and Educational Theory, and John Marsh's Class Dismissed. Murray and Liston argue that Blacker, Cole, and Marsh provide a much-needed structural delineation of schooling in capitalist society. All three works have substantial merit and are in need of (...) minor adjustments. Blacker's vision is telling and chilling but may need some fine-tuning; Cole's defense of Marxism is commendable but tends toward the disembodied abstract; and Marsh's text capably highlights educationists' blinders but seems to miss elements of a critical structural account. While recognizing real limitations on transformative education under capitalism, Murray and Liston nevertheless elaborate a variation of the radical humanist project. It is their skeletal attempt at an educationally and morally defensible reparative theory. (shrink)

Craft in a modern context is more often a symbolic good rather than a utilitarian item. It carries stories of its production along with related values. Given the mute nature of the object, many of these narratives are projected by the consumer, which can often be based on fiction rather than reality. This makes ethnographic research, such as that collected in Critical Craft, of great importance.One of the principal structures addressed is the hierarchy of craft and design. Geoffrey Gowlland's "Materials, (...) the Nation and the Self: Division of Labor in a Taiwanese Craft" offers a fascinating overview of the values attached to the production process of traditional ceramics. This involves the division between the... (shrink)

BackgroundDespite rapid growth of the scientific literature, no consensus guidelines have emerged to define the optimal criteria for editors to grade submitted manuscripts. The purpose of this project was to assess the peer reviewer metrics currently used in the surgical literature to evaluate original manuscript submissions.MethodsManuscript grading forms for 14 of the highest circulation general surgery-related journals were evaluated for content, including the type and number of quantitative and qualitative questions asked of peer reviewers. Reviewer grading forms for the seven (...) surgical journals with the higher impact factors were compared to the seven surgical journals with lower impact factors using Fisher’s exact tests.ResultsImpact factors of the studied journals ranged from 1.73 to 8.57, with a median impact factor of 4.26 in the higher group and 2.81 in the lower group. The content of the grading forms was found to vary considerably. Relatively few journals asked reviewers to grade specific components of a manuscript. Higher impact factor journal manuscript grading forms more frequently addressed statistical analysis, ethical considerations, and conflict of interest. In contrast, lower impact factor journals more commonly requested reviewers to make qualitative assessments of novelty/originality, scientific validity, and scientific importance.ConclusionSubstantial variation exists in the grading criteria used to evaluate original manuscripts submitted to the surgical literature for peer review, with differential emphasis placed on certain criteria correlated to journal impact factors. (shrink)

The Signature of All Things is Giorgio Agamben's sustained reflection on method. To reflect on method implies for Agamben an archaeological vigilance: a persistent form of thinking in order to expose, examine, and elaborate what is obscure, unanalyzed, even unsaid, in an author's thought. To be archaeologically vigilant, then, is to return to, even invent, a method attuned to a "world supported by a thick weave of resemblances and sympathies, analogies and correspondences." Collecting a wide range of authors and topics (...) in a slim but richly argued volume, Agamben enacts the search to create a science of signatures that exceeds the attempts of semiology and hermeneutics to determine the pure and unmarked signs that signify univocally, neutrally, and eternally. Three conceptual figures organize Agamben's argument and the advent of his new method: the paradigm, the signature, and archaeology. Each chapter is devoted to an investigation of one of these concepts and Agamben carefully constructs its genealogy transhistorically and from an interdisciplinary perspective. And at each moment of the text, Agamben pays tribute to Michel Foucault, whose methods he rethinks and effectively uses to reformulate the logic of the concepts he isolates. The Signature of All Things reveals once again why Agamben is one of the most innovative thinkers writing today. (shrink)

We estimate that 208,000 deep brain stimulation (DBS) devices have been implanted to address neurological and neuropsychiatric disorders worldwide. DBS Think Tank presenters pooled data and determined that DBS expanded in its scope and has been applied to multiple brain disorders in an effort to modulate neural circuitry. The DBS Think Tank was founded in 2012 providing a space where clinicians, engineers, researchers from industry and academia discuss current and emerging DBS technologies and logistical and ethical issues facing the field. (...) The emphasis is on cutting edge research and collaboration aimed to advance the DBS field. The Eighth Annual DBS Think Tank was held virtually on September 1 and 2, 2020 (Zoom Video Communications) due to restrictions related to the COVID-19 pandemic. The meeting focused on advances in: (1) optogenetics as a tool for comprehending neurobiology of diseases and on optogenetically-inspired DBS, (2) cutting edge of emerging DBS technologies, (3) ethical issues affecting DBS research and access to care, (4) neuromodulatory approaches for depression, (5) advancing novel hardware, software and imaging methodologies, (6) use of neurophysiological signals in adaptive neurostimulation, and (7) use of more advanced technologies to improve DBS clinical outcomes. There were 178 attendees who participated in a DBS Think Tank survey, which revealed the expansion of DBS into several indications such as obesity, post-traumatic stress disorder, addiction and Alzheimer’s disease. This proceedings summarizes the advances discussed at the Eighth Annual DBS Think Tank. (shrink)