In March 1928, John Dewey responded to a request from Marie Meloney, editor of the New York Herald-Tribune Sunday Magazine, and offered his recommendations on recently published texts on education. Dewey wrote, "I think the best educational books of recent publication are Bode, Modern Educational Theories . . . Kilpatrick, Education for a Changing Civilization . . . & Martin, The Meaning of a Liberal Education".1 This was not the first time Dewey recommended Everett Dean Martin's book. In 1927, the (...) editors of the Journal of the National Education Association approached Dewey and asked, "What book have you recently found especially worthwhile? Something that you have read easily, eagerly, and with profit—either in .. (shrink)

This book proposes a philosophical framework, based on the work of John Dewey, to develop a new model for community colleges in the 21st century.

Mass media ethics and the classical liberal ideal of the autonomous individual are historically linked and professionally dominant--yet the authors of this work feel this is intrinsically flawed. They show how recent research in philosophy and social science--together with a longer tradition in theological inquiry--insist that community, mutuality, and relationship are fundamental to a full concept of personhood. The authors argue that "persons-in-community" provides a more defensible grounding for journalists' professional moral decision-making in crucial areas such as truthtelling, privacy, organizational (...) culture, and balanced coverage. With numerous examples drawn from life as well as from theory, this book will interest journalists, editors, and professionals in media management as well as students and scholars of media ethics, reporting, and media law. (shrink)

Three experts in media ethics reexamine ethical behaviour in news gathering and reporting. The book combines a wide range of real-life and hypothetical examples of ethical dilemmas in news reporting with a thoughtful critique of the underlying individualistic theories of mainstream media ethics.

William James, one of America’s most original philosophers and psychologists, was concerned above all with the manner in which philosophy might help people to cope with the vicissitudes of daily life. Writing around the turn of the twentieth century, James experienced firsthand, much as we do now, the impact upon individuals and communities of rapid changes in extant values, technologies, economic realities, and ways of understanding the world. He presented an enormous range of practical recommendations for coping and thriving in (...) such circumstances, arguing consistently that prospects for richer lives and improved communities rested not upon trust in spiritual or material prescriptions, but rather on clear thinking in the cause of action. This volume seeks to demonstrate how James’s astonishingly rich corpus can be used to address contemporary issues and to establish better ways for thinking about the moral and practical challenges of our time. In the first part, James’s theories are applied directly to issues ranging from gun control to disability, and the ethics of livestock farming to the meaning of “progress” in race relations. The second part shows how James’s theories of ethics, experience, and the self can be used to “clear away” theoretical matters that have inhibited philosophy’s deployment to real-world issues. Finally, part three shows how individuals might apply ideas from James in their personal lives, whether at work, contemplating nature, or considering the implications of their own habits of thought and action. (shrink)

For forty years, Harvey Mansfield has been worth reading. Whether plumbing the depths of MachiavelliOs Discourses or explaining what was at stake in Bill ClintonOs impeachment, MansfieldOs work in political philosophy and political science has set the standard. In Educating the Prince, twenty-one of his students, themselves distinguished scholars, try to live up to that standard. Their essays offer penetrating analyses of Machiavellianism, liberalism, and America., all of them informed by MansfieldOs own work. The volume also includes a bibliography of (...) MansfieldOs writings. (shrink)

Adverse events that harm patients can also have a harmful impact on health care workers. A few health care organizations have begun to provide psychological support to these Second Victims, but there is uncertainty over whether these discussions are admissible as evidence in malpractice litigation or disciplinary proceedings. We examined the laws governing the admissibility of these communications in 5 states, and address how the laws might affect participation in programs designed to support health care workers involved in adverse events. (...) We found that privilege is uneven from stateto- state, and also unclear. Ambiguity alone could have a chilling effect on Second Victim programs. We propose legislation to protect volunteer and health care worker communications provided by peer counselors, or failing this, updating of statutory provisions to explicitly include these communications within the ambit of existing protections. Enhancing protections could help to foster an environment of healing for both patients and caregivers. (shrink)

The harmful impact of an adverse event ripples beyond injured patients and their families to affect physicians, nurses, and other health care staff that are involved. These “Second Victims” may experience intense feelings of anxiety, guilt, and fear. They may doubt their clinical competence or ability to continue working at all. Some go on to suffer post-traumatic stress disorder and depression.Medical institutions long ignored this problem, preferring to believe that adverse events, or “errors,” occur due to incompetence — the unfortunate (...) work of a few “bad” practitioners who deserve, if anything, a reprimand for their negligence. Study after study has rejected this attribution and shown that adverse events in health care stem primarily from systemic flaws, not “bad apples.” Devastating errors, in other words, can, do, and always will happen in the care of competent, well-trained, and caring practitioners. (shrink)

The Anthropology of Sport and Human Movement represents a collection of work that reveals and explores the often times dramatic relationship of our biology and culture that is inextricably woven into a tapestry of movement patterns. It explores the underpinning of human movement, reflected in play, sport, games and human culture from an evolutionary perspective and contemporary expression of sport and human movement.

In a previous paper I argued that there is conceptual parity between Christian materialism and Christian dualism because nonmatter is neutral with respect to thinking and feeling -- it might do these but it also might not. This undermines the explanatory power of immaterial souls. J. P. Moreland responded by saying that dualists reject this neutral conception of souls: souls are not generic immaterial substances, but consist of a special kind of nonmatter, namely, nonmatter whose essence it is to think (...) and feel. I reply that conceptual parity can still be maintained: Christian materialists can claim that brains are not neutral either, but consist of a special kind of matter, namely, thinking and feeling matter. So there is parity whether one adopts a topic-neutral approach or an essentialist approach. (shrink)

Background: This study tested the core tenets of how facial scars are perceived by characterizing layperson response to faces with scars. The authors predicted that scars closer to highly viewed structures of the face (i.e., upper lip and lower lid), scars aligned against resting facial tension lines, and scars in the middle of anatomical subunits of the face would be rated less favorably. Methods: -/- Volunteers aged 18 years and older from the United States were recruited through Amazon’s Mechanical Turk (...) to complete a face rating survey. Scars were digitally added in different locations and orientations for a total of 14 unique scars added to each face. Each participant rated 50 different faces on confidence, friendliness, and attractiveness. Data were analyzed using linear mixed effects models. Results: -/- A total of 88,850 ratings [82,990 scarred (93.4 percent)] for attractiveness, friendliness, and confidence were analyzed. In univariate linear mixed effects models, the presence of a facial scar did not significantly impact attractiveness (β = 0.016, SE = 0.014, z = 1.089, p = 0.276). A second set of linear mixed effects models identified interactions between location, subunit placement, and orientation to facial tension lines. Scars located on the lower lid mid subunit perpendicular to facial tension lines were rated less attractive (β = −0.065, SE = 0.028, z = −2.293, p = 0.022). Conclusions: -/- On average, a single well-healed facial scar does not negatively affect first impressions of attractiveness, confidence, or friendliness. Specific scar location and orientation combinations, however, such as a perpendicular scar at the mid-lower eyelid, may result in lower perceived attractiveness, confidence, and friendliness. (shrink)

Background: Facial attractiveness influences our perceptions of others, with beautiful faces reaping societal rewards and anomalous faces encountering penalties. The purpose of this study was to determine associations of visual attention with bias and social dispositions toward people with facial anomalies. -/- Methods: Sixty subjects completed tests evaluating implicit bias, explicit bias, and social dispositions before viewing publicly available images of preoperative and postoperative patients with hemifacial microsomia. Eye-tracking was used to register visual fixations. -/- Results: Participants with higher implicit (...) bias scores fixated significantly less on the cheek and ear region preoperatively (P = 0.004). Participants with higher scores in empathic concern and perspective taking fixated more on the forehead and orbit preoperatively (P = 0.045) and nose and lips (P = 0.027) preoperativel. -/- Conclusions: Participants with higher levels of implicit bias spent less visual attention on anomalous facial anatomy, whereas participants with higher levels of empathic concern and perspective taking spent more visual attention on normal facial anatomy. Levels of bias and social dispositions such as empathy may predict layperson gaze patterns toward those with facial anomalies and provide insights to neural mechanisms underlying the "anomalous is bad" paradigm. (shrink)

Background: Facial proportionality and symmetry are positively associated with perceived levels of facial attractiveness. -/- Objective: The aims of this study were to confirm and extend the association of proportionality with perceived levels of attractiveness and character traits and determine differences in attractiveness and character ratings between "anomalous" and "typical" faces using a large dataset. -/- Methods: Ratings of 597 unique individuals from the Chicago Face Database were used. A formula was developed as a proxy of relative horizontal proportionality, where (...) a proportionality score of "0" indicated perfect proportionality and more negative scores indicated less proportionality. Faces were categorized as "anomalous" or "typical" by 2 independent reviewers based on physical features. -/- Results: Across the ratings for all faces, Spearman correlations revealed greater proportionality was associated with attractiveness ( ρ = 0.292, P < 0.001) and trustworthiness ( ρ = 0.193, P < 0.001), while lesser proportionality was associated with impressions of anger (ρ = 0.132, P = 0.001), dominance (ρ = 0.259, P < 0.001), and threateningness ( ρ = 0.234, P < 0.001). Mann-Whitney U tests revealed the typical cohort had significantly higher levels of proportionality (-13.98 versus -15.14, P = 0.030) and ratings of attractiveness (3.39 versus 2.99, P < 0.001) and trustworthiness (3.48 versus 3.35, P < 0.001). -/- Conclusions: This study demonstrated that facial proportionality is not only significantly associated with higher ratings of attractiveness, but also associated with judgements of trustworthiness. Proportionality plays a role in evoking negative attributions of personality characteristics to people with facial anomalies. (shrink)

Antiphon's speech on the murder of Herodes has been variously dated by several scholars, but all seem to agree that it was delivered a good many years after the revolt and recapture of Mytilene. According to this opinion the speaker in § 74 declares himself too young to know much of what happened in those days. Before going into this more carefully, it seems necessary to visualize the situation of the accused man. In order to achieve this the best we (...) can do is to follow his own words in the Sirjyrjcris, §§ 20–24: ‘I travelled from Mytilene on the same ship as the lost man; we were on our journey to Ainos, I to see my father—he happened to be there at that time—he in order to sell some slaves to Thracian natives. These natives, who were to pay the ransom, and the slaves were on board too.—All this I will prove by witnesses.—As we, however, met with stormy weather, we were compelled to put in to a harbour in the territory of Methymna; there we found that* ship into which Herodes changed; in that ship, according to the accusers, he died. Now all this was mere chance: obviously I had not persuaded him to travel with me, no, he was travelling on his own business. Then I, personally, had a very good reason for travelling to Ainos; our putting in to that harbour was not premeditatd, we were compelled to. And again, when we were lying at anchor, the change of ship took place without any trickery or fraud: again, it was done because of necessity. The ship, viz., on which we had been travelling was not covered, the other one on the contrary had a covering; that was because of the rain.—All this I will prove by witnesses.—After boarding the other ship we drank some wine. After that it is only known that he left the ship, but did not return. I myself never left the ship that night at all. When the next day but did not return. I myself never left the ship that night at all. When the next day he had disappeared, we looked for him, I as well as the others. Probably it seemed strange to them, it certainly did to me. And it was I who caused a messenger to be sent to Mytilene, not one of the crew or the passengers belonging to Herodes, but my own servant. If I had been guilty, I would not, of course, have sent a man who might have informed against me. But when the man could not be found in Mytilene, nor anywhere else, and when the weather had improved and all the other ships were putting out, I also sailed.—All this I will prove by witnesses. (shrink)

William James’ argument against William Clifford in The Will to Believe is often understood in terms of doxastic efficacy, the power of belief to influence an outcome. Although that is one strand of James’ argument, there is another which is driven by ampliative risk. The second strand of James’ argument, when applied to scientific cases, is tantamount to what is now called the Argument from Inductive Risk. Either strand of James’ argument is sufficient to rebut Clifford's strong evidentialism (...) and show that it is sometimes permissible to believe in the absence of compelling evidence. However, the two considerations have different scope and force. Doxastic efficacy applies in only some cases but allows any values to play a role in determining belief; risk applies in all cases but only allows particular conditional values to play a role. (shrink)

We conceptualise a framework that incorporates psychological and non-psychological factors influencing pro-environmental behaviour. We conducted qualitative investigations in five sectors in South Africa, where individuals and groups are dealing with significant environmental issues, including climate change, biodiversity loss and land-use change. We found three fundamental elements necessary for behavioural change to be realised: awareness (A) is defined as an understanding that society and earth systems are connected; motivation (M) involves the personal and operational drivers that encourage an individual or organisation (...) to respond to new levels of awareness; and pathways (P) recognise the practical solutions and opportunities that facilitate actual change. AMP was built up from thirty-eight variables that cut across between three and five of the case studies, which were further grouped into fourteen categories. The inter-connectedness of AMP suggests that for pro-environmental behaviour to occur, attention cannot be focused on satisfying one of the elements in isolation. This is the first attempt to integrate theory from social psychology, sociology, organisational theory and management in a conceptual framework for pro-environmental behaviour. The AMP framework is useful for supporting practitioners or change-agents designing environmental sustainability initiatives. (shrink)

In its original form Dirac's equations have been expressed by use of the γ-matrices γμ, μ=0, 1, 2, 3. They are elements of the matrix algebra M 4 (ℂ). As emphasized by Hestenes several times, the γ-matrices are merely a (faithful) matrix representation of an orthonormal basis of the orthogonal spaceℝ 1,3, generating the real Clifford algebra Cl 1,3 . This orthonormal basis is also denoted by γμ, μ=0, 1, 2, 3. The use of the matrix algebra M 4 (...) (ℂ) to represent Cl 1,3 has some unsatisfactory aspects. The γ-matrices contain imaginary numbers as entries whereas Cl 1,3 is real. Moreover, as a matrix algebra Cl 1,3 is M 2 (ℍ) but only a part of M 4 (ℂ). For that reason we investigate in this paper several forms of Dirac's equations in terms of M 2 (ℍ) instead of M 4 (ℂ). In Section1 we survey Dirac's equations describing the interaction of matter with electromagnetic, electroweak, and strong fields. Section2 deals with electromagnetic/weak interactions employing M 2 (ℍ). Finally, in Section3 we deal with Dirac's equations for strong interactions between quarks. In contrast to su(2) ⊕ u(1), the Lie algebra su(3) is not isomorphic to any subalgebra of Cl 1,3 . Therefore we do not give a description of strong interactions by use of M 2 (ℍ). Instead of such an approach we describe these interactions using the space of quadruples of bivector fields in Cl 1,3 . The thus obtained description has remarkable formal resemblance to the original Dirac equations using wave functions with values in the linear spaceℂ 4. (shrink)

Peter Brian Herrenden Birks 1941-2004Hugh Redwald Dacre 1914-2003William Hugh Clifford Frend 1916-2005John Andrew Gallagher 1919-1980Philip Grierson 1910-2006Stuart Newton Hampshire 1914-2004William McKane 1921-2004John Malcolm Sabine Pasley 1926-2004Benjamin John Pimlott 1945-2004Robert Duguid Forrest Pring-Mill 1925-2005John Edgar Stevens 1921-2002Peter Strawson 1919-2006Henry William Rawson Wade 1918-2004Alan Harold Williams 1927-2005Bernard Arthur Owen Williams 1929-2003John James Wymer 1928-2006.

I critically evaluate the influential new wave account of theory reduction in science developed by Paul Churchland and Clifford Hooker. First, I cast doubt on claims that the new wave account enjoys a number of theoretical virtues over its competitors, such as the ability to represent how false theories are reduced by true theories. Second, I argue that the genuinely novel claim that a corrected theory must be specified entirely by terms from the basic reducing theory is in fact (...) too restrictive for scientific practice and should be rejected. Basic theories co-evolve with nonbasic theories in a mutually interactive way, and thus the basic theories incorporate the concepts and concerns of nonbasic theories. Third, I show that once its ontological consequences are duly noted, the reductive part the new wave account collapses into the classical theory developed within the logical empiricist tradition. As such, it still falls prey to standard anti-reductionist argument based upon multiple realizability and the cross-classification of special science and physical science terms. (shrink)

This article presents a Pauli-Dirac matrix approach to Clifford Algebras. It is shown that the algebra C2 is generated by two Pauli matrices iσ2 and iσ3; C3 is generated by the three Pauli matrices σ1, σ2, σ3; C4 is generated by four Dirac matrices γ0, γ1, γ2, γ3 and C5 is generated by five Dirac matrices iγ0, iγ1, iγ2, iγ3, iγ5. The higher dimensional anticommuting matrices which generate arbitrarily high order Clifford algebras are given in closed form. The (...) results obtained with this Clifford algebra approach are compared with the vector product method which was described in a recent article [Found. Phys. 10, 531–553 (1980) by Poole, Farach and Aharonov] and with the Dirac, Rashevskii and Ramakrishnan methods of matrix generation. (shrink)

In this essay we argue for the Janus-faced nature of hope. We show that attempts to sanitise the concept of hope either by separating it conceptually from other phenomena such as wishful thinking, or, more generally, by seeking to minimise the negative aspects of hope, do not help us to understand the nature of hope and its functions as regards religion. Drawing on functional accounts of religion from Clifford Geertz and Tamas Pataki, who both—in their different ways—see the function (...) of religion in terms of its capacity to satisfy deep psychological needs, we demonstrate that religion uniquely positions itself with regard to hope’s two faces, simultaneously exploiting positive and negative aspects of hope. (shrink)

Philosophers of science have offered different accounts of what it means for one scientific theory to reduce to another. I propose a more or less friendly amendment to Kenneth Schaffner’s “General Reduction-Replacement” model of scientific unification. Schaffner interprets scientific unification broadly in terms of a continuum from theory reduction to theory replacement. As such, his account leaves no place on its continuum for type irreducible and irreplaceable theories. The same is true for other accounts that incorporate Schaffner's continuum, for example, (...) those developed by Paul Churchland, Clifford Hooker, and John Bickle. Yet I believe a more general account of scientific unification should include type irreducible and irreplaceable theories in an account of their partial reduction, specifically, when there is a reduction of their tokens. Thus I propose a “Reduction-Reception-Replacement” model wherein type irreducible and irreplaceable theories are accepted or received for the purpose of unifying domains of particulars. I also suggest a link between this kind of token reduction and mechanistic explanation. (shrink)

The thesis of this book is that moral evil is for Kant an ineradicable aspect of human existence; moreover the author argues that moral evil is a datum of experience which none of the rationalist systems which preceded Kant's, nor Hegel's system which came after, could assimilate, a rock upon which they all shattered. Reboul's concern is to investigate the "insondable profondeur du mal radical" as this theme appears in the forty years of Kant's active philosophic production; his interest reflects (...) the influence of his mentor, Karl Barth. Reboul is at his best in his clear depiction of Kant's ingenuity at reconciling the optimism of the Enlightenment with the Reformation's conviction of sin. For example, the very insufficiency of Leibniz' attempt to supply a ground for every decision of the will, his inability to explain the reality of willful evil, is used by Kant as an excuse for not going beyond Leibniz' theory. "Expliquer la liberté serait la détruire," writes Reboul. Kant assimilates the idea of progress by assigning it to the level of phenomenal or technical improvements. Moral value resides only in those acts by which we loosen the ties of sensible determination upon the will and render ourselves autonomous. The struggle for autonomy must be fought by each man for himself; there is a decisive limit to the help we can derive from "progress." For Kant man is bent towards evil not only by reason of his spontaneous attraction to sensible objects, but also in virtue of a basic perversion of his faculty of judgment, a perversion which comes close to being identified with liberty itself. It is significant, as Reboul notes, that all of Kant's examples of free will are also examples of moral evil. This low estimate of man's spontaneous faculties is at the basis of Kant's suspicion of all eudaimonistic ethics, his demand that every moral decision be "disinterested," that the moral law be the sole determinant of the will. Just as in the first Critique Kant insists on finding an adequate cause to ground the universality which attaches to the laws of science and mathematics, so in ethics he demands an adequate explanation of the radical character of evil present in the world; this he finds in a perversion of the human faculty of judgment, whereby a contingent element of experience is illegitimately raised to the status of a universal maxim by the will. The moral decision must be disinterested because every attraction by a sensible object threatens to become the occasion for such a definitive fixation of our moral character. But Kant's deeper originality lies in a view which bridges the Enlightenment and later periods. Kant breaks with a convention of systematic philosophical activity which had held sway from the Greeks through Leibniz, the view that reality must be consistent. For Kant, the principle of non-contradiction does not apply to the phenomenal world but only to the noumenal. For Kant, human existence can harbor contradictions; consequently man lives perpetually in tension. As a citizen of two worlds, he is committed to achieving a moral ideal which the basic perversion of his will renders unrealizable. This tension can be viewed optimistically, as with Hegel ; then the "positivity" of evil is interpreted as a necessary step, a " felix culpa," by which God rouses man to greater efforts and brings him to maturity, autonomy, and a vision of the real. The other alternative is the Schopenhauerian interpretation, wherein the tensions in the absurdity of the human condition are taken as too extreme to warrant further participation. Reboul is excellent in showing the form these tensions take in Kant's system: the mystery of how a basically perverted will can be converted into a "good faith," although this is the ethical command; the command never to feel oneself "justified" through having done one's duty, even though the moral command obligates us to strive perpetually for this condition. However, in stressing the harsh import of sin for Kant, and thus saving Kant from Hegel, has Reboul not placed Kant in the company of Schopenhauer, Sartre, and Camus?--P. M. (shrink)

It is often argued today that a deep and troublesome gap across the Atlantic has been developing and that Europeans and Americans no longer share the same view of the world. On the basis of data gathered in the 2002 Transatlantic Trends Survey, held in the USA and six European countries, this article assesses whether there is indeed such a gap at the mass level. It focuses on three major dimensions of world views: (1) perceptions of threats (2) the sense (...) of affinity with other countries in terms of allies, friends or foes, and (3) attitudes toward the use of force, both in general and in specific circumstances, more particularly the war over Iraq. It concludes that European publics in 2002 looked at the world in a way that is rather similar to that of many ordinary Americans including harbouring deep reservations about the conduct of certain aspects of U.S. foreign policy. Both publics share fundamental worldviews. On Iraq, Europeans and Americans agreed in some respects (such as the necessary role of the UN) but disagreed on other. In many respects at the mass level the differences across the Atlantic are of degree, and not fundamental. They result from disaffection with the present administration rather than with US policies in general. Moreover, the alleged European is a misnomer, which hides the considerable sympathies and warm feelings towards America, and the perceived common interests and values. (shrink)

Using the ideas of Clifford Geertz, Adolf Portmann, Charles Taylor, and others, I seek to develop and expand Polanyi’s account of language and its role in our human way of being bodily mindful in the world. The expansion of Polanyi’s ideas on language in the evolutionary rise of Homo sapiens and in the moral and mental development of the child does two things that I believe are important: (1) obviates the need to appeal to an incorporeal thinking substance - (...) i.e., dualism - to ground the reality of human transcendence, and (2) highlights the place of natural language in the irreducibility of human mentality. (shrink)

The question concerning the meaning of life is important, but it immediately confronts the present authors with insurmountable obstacles from a philosophical standpoint, as it would require us to define not only what we hold to be life, but what we hold to be meaning in addition, requiring us to do both in a properly researched context. We unconditionally surrender to that challenge. Instead, we offer a vernacular, armchair approach to life’s origin and meaning, with some layman’s thoughts on the (...) meaning of origins as viewed from the biologist’s standpoint. One can observe that biologists generally approach the concept of biological meaning in the context of evolution. This is the basis for the broad resonance behind Dobzhansky’s appraisal that “Nothing in biology makes sense except in the light of evolution”. Biologists try to understand living things in the historical context of how they arose, without giving much thought to the definition of what life or living things are, which for a biologist is usually not an interesting question in the practical context of daily dealings with organisms. Do humans generally understand life’s meaning in the context of history? If we consider the problem of life’s origin, the question of what constitutes a living thing becomes somewhat more acute for the biologist, though not more answerable, because it is inescapable that there was a time when there were no organisms on Earth, followed by a time when there were, the latter time having persisted in continuity to the present. This raises the question of where, in that transition, chemicals on Earth became alive, requiring, in turn, a set of premises for how life arose in order to conceptualize the problem in relation to organisms we know today, including ourselves, which brings us to the point of this paper: In the same way that cultural narratives for origins always start with a setting, scientific narratives for origins also always start with a setting, a place on Earth or elsewhere where we can imagine what happened for the sake of structuring both the problem and the narrative for its solution. This raises the question of whether scientific origins settings convey meaning to humans in that they suggest to us from what kind of place and what kinds of chemicals we are descended, that is, to which inanimate things we are most closely related. (shrink)

Ever since Clifford Geertz urged the “blurring of genres” in the social sciences, many scholars have considered the crossing of disciplinary boundaries a healthy alternative to rigidly maintaining them. But what precisely does the metaphor of “blurring” imply? By unpacking the varieties of visual experiences that are normally grouped under this rubric, this essay seeks to provide some precision to our understanding of the implications of fuzziness. It extrapolates from the blurring caused by differential focal distances, velocities of objects (...) in the visual field, and competing perspectival vantage points to comparable effects in the intersection of different scholarly disciplines. Arguing against the holistic implications of Geertz's metaphor, as well as the even more totalizing concept of “consilience” introduced by E. O. Wilson, it suggests that blurring implies new types of complexity between or among those disciplines. (shrink)

This article reviews Hestenes' work on the Dirac theory, where his main achievement is a real formulation of the theory within thereal Clifford algebra Cl 1,3 ≃ M2 (H). Hestenes invented first in 1966 hisideal spinors $\phi \in Cl_{1,3 _2}^1 (1 - \gamma _{03} )$ and later 1967/75 he recognized the importance of hisoperator spinors ψ ∈ Cl 1,3 + ≃ M2 (C).This article starts from the conventional Dirac equation as presented with matrices by Bjorken-Drell. Explicit mappings are given (...) for a passage between Hestenes' operator spinors and Dirac's column spinors. Hestenes' operator spinors are seen to be multiples of even parts of real parts of Dirac spinors (real part in the decompositionC ⊗ Cl 1,3 andnot inC ⊗ M4 (R)=M4 (C)). It will become apparent that the standard matrix formulation contains superfluous parts, which ought to be cut out by Occam's razor.Fierz identities of bilinear covariants are known to be sufficient to study the non-null case but are seen to be insufficient for the null case ψ†γ0ψ=0, ψ†γ0γ0123ψ=0. The null case is thoroughly scrutinized for the first time with a new concept calledboomerang. This permits a new intrinsically geometric classification of spinors. This in turn reveals a new class of spinors which has not been discussed before. This class supplements the spinors of Dirac, Weyl, and Majorana; it describes neither the electron nor the neutron; it is awaiting a physical interpretation and a possible observation.Projection operators P±, Σ± are resettled among their new relatives in End(Cl 1,3 ). Finally, a new mapping, calledtilt, is introduced to enable a transition from Cl 1,3 to the (graded) opposite algebra Cl 3,1 without resorting to complex numbers, that is, not using a replacement γμ →iγμ. (shrink)