We report on the simultaneous determination of complementary wave and particle aspects of light in a double-slit type “welcher-weg” experiment beyond the limitations set by Bohr’s Principle of Complementarity. Applying classical logic, we verify the presence of sharp interference in the single photon regime, while reliably maintaining the information about the particular pinhole through which each individual photon had passed. This experiment poses interesting questions on the validity of Complementarity in cases where measurements techniques that avoid Heisenberg’s uncertainty principle and (...) quantum entanglement are employed. We further argue that the application of classical concepts of waves and particles as embodied in Complementarity leads to a logical inconsistency in the interpretation of this experiment. (shrink)

Just as with the riots of 1981, the riots of summer 2012 will play a key role in the reshaping of British society. Most analyses frame these events as pathologies of the poor or as contemporary expressions of Mertonian anomie. Drawing on the work of Randall Collins, this article explores the riot as a form of collective action, considers the role of looting and arson within it, and the extent to which the actors involved find themselves part of multiple logics (...) that mutually undermine each other. The analysis highlights the importance of the embodied, mobile, temporal and visual dimensions of the riot, and argues that the social sciences need to develop conceptual tools and methods to both engage with such embodied events and to be part of the social debate about their meaning. (shrink)

BackgroundIn the Canadian Alliance for Healthy Hearts and Minds (CAHHM) cohort, participants underwent magnetic resonance imaging (MRI) of the brain, heart, and abdomen, that generated incidental findings (IFs). The approach to managing these unexpected results remain a complex issue. Our objectives were to describe the CAHHM policy for the management of IFs, to understand the impact of disclosing IFs to healthy research participants, and to reflect on the ethical obligations of researchers in future MRI studies.MethodsBetween 2013 and 2019, 8252 participants (...) (mean age 58 ± 9 years, 54% women) were recruited with a follow-up questionnaire administered to 909 participants (40% response rate) at 1-year. The CAHHM policy followed a restricted approach, whereby routine feedback on IFs was not provided. Only IFs of severe structural abnormalities were reported.ResultsSevere structural abnormalities occurred in 8.3% (95% confidence interval 7.7–8.9%) of participants, with the highest proportions found in the brain (4.2%) and abdomen (3.1%). The majority of participants (97%) informed of an IF reported no change in quality of life, with 3% of participants reporting that the knowledge of an IF negatively impacted their quality of life. Furthermore, 50% reported increased stress in learning about an IF, and in 95%, the discovery of an IF did not adversely impact his/her life insurance policy. Most participants (90%) would enrol in the study again and perceived the MRI scan to be beneficial, regardless of whether they were informed of IFs. While the implications of a restricted approach to IF management was perceived to be mostly positive, a degree of diagnostic misconception was present amongst participants, indicating the importance of a more thorough consent process to support participant autonomy.ConclusionThe management of IFs from research MRI scans remain a challenging issue, as participants may experience stress and a reduced quality of life when IFs are disclosed. The restricted approach to IF management in CAHHM demonstrated a fair fulfillment of the overarching ethical principles of respect for autonomy, concern for wellbeing, and justice. The approach outlined in the CAHHM policy may serve as a framework for future research studies.Clinical trial registrationhttps://clinicaltrials.gov/ct2/show/nct02220582. (shrink)

The prevalence of poor health among young disadvantaged Black mothers and their children has prompted a revival of maternal activism among Black middle-class urban women. A study of the California-based “Birthing Project,” founded in 1988, reveals that such activism is best understood as a modern-day version of Black activist mothering practiced by African American clubwomen from the time of slavery to the early 1940s. This article demonstrates the legacy of “normative empathy” as a significant motivator for middle-class maternal activism and (...) as a basis for a middle-class critique of Black mothering among the disadvantaged. (shrink)

Introduction -- Theory before theory, 1915-1960 -- French theory, 1949-1968 -- Screen theory, 1969-1996 -- Post-theory, 1996-2015 -- Summary.

In 2016 Pope Francis went to Lund in Sweden for a joint service with the Lutherans to begin the events marking the 500th anniversary of the Reformation. Catholics have also been involved in conferences and other events that have been organized as part of this anniversary. The context and background to the Catholic Church's involvement is the Church's commitment to ecumenical dialogue made at the Second Vatican Council. The theological basis for that commitment is to be found in the Second (...) Vatican Council's Constitution on the Church, Lumen Gentium and its Decree on Ecumenism, Unitatis Redintegratio. This paper takes the opportunity of this anniversary to take stock of the progress of the ecumenical movement and notes some of the issues and challenges that have impacted upon it. As well as social and cultural factors these include the increasing importance of interreligious dialogue and its relationship to ecumenical dialogue. Ecumenists also have to take account of the widely varying interpretations of the Reformation offered by church historians. Finally the paper argues that in the Catholic Church perceptions of ecumenism often fail to take account of the many ways in which the Second Vatican Council significantly changed the global role and profile of the Catholic Church as a source and agent of peace and reconciliation on many different levels. Ecumenical engagement is an integral part of that continuing development which is increasingly acknowledged by political and religious leaders throughout the world. (shrink)

Reviews : John Keane, Public Life and Late Capitalism: Toward a Socialist Theory of Democracy ; John Keane and John Owens, After Full Employment.