A post-fission perspective of the discovery of nuclear fission

Why was nuclear fission discovered under the repressive conditions of the Third Reich and not in one of the other leading countries in science? The attempts to answer this question leads to the formulation of the hypothesis that under the very special constellation of the working relations between Hahn and Meitner, the forced emigration of Meitner was advantageous insofar as it emancipated Hahn from the physical guardianship of Meitner, and liberated his chemical competence. This was a prerequisite to recognizing the presence of Barium in the debris of Uranium decay. At the same time it liberated Meitner so that she could break with the old physicalconcepts of knowledge when accepting Hahn's chemical results, and find the correct interpretation of the experiment. Moreover, Hahn's and Strassmann's inner emigration which kept them away from participating in political activities and engagements, as well as their abstinence from competing in fashionable research (which was stimulated by the increasing political isolation of Germany) helped them to concentrate on their more restricted investigations following unfashionable lines of thinking and were among the favourable conditions for making their great discovery.Based in a contribution to an International Workshop on the Fiftieth Anniversary of the Discovery of Nuclear Fission, Institute of Advanced Studies, Berlin, March 1989.     

Local and normative rationality of science: The ‘content of discovery’ rehabilitated

The recent turn to the context of discovery and other postmodernist developments in the philosophy of science have undermined the idea of a universal rationality of science. This parallels the fate of the classical dream of a logic of discovery. Still, justificational questions have remained as a distinct perspective, though comprising both consequential and generative justification — an insight delayed by certain confusions about the (original) context distinction. An examination of one particular heuristic strategy shows its local rationality; even as an efficient procedure of hypothesis generation, it carries probative weight. It will be explored in which respects such a strategy can be normative or contain normative elements.Parts of this paper were published, in summary fashion, in Kirschenmann (1989).     

RELATING SCIENCE AND THEOLOGY WITH COMPLEMENTARITY: A CAUTION

Abstract. I examine Helmut Reich's recent ( Zygon , December 1990) discussion of the complementarity model for relating science and theology and find it confusing. On the one hand, his complementarity purports to make science and theology relevant for each other. It even requires we solve their conflicts. On the other hand, it discourages the overlap of scientific and theological knowledge and thus the direct resolution of their conflicts.     

Eta,disco, odisco,andF

Two coefficients are proposed for measuring the extent of overlap in distributions as a direct function of the variance between the arithmetic means (“disco” and “odisco”). They are designed to answer such questions as: “Given the value of a numerical variablex, to which population should an individual be assigned so that minimum error would be incurred?” This is just the reverse of the question addressed by ANOVA. These coefficients are shown to be analytic inx and they are related to Pearson's eta and Fisher'sF. Extensions of these coefficients (designed for univariate, one-way discrimination) tok-way and multivariate discriminant analysis and measurement of “interaction” are suggested.     

FANTASY WORLDS AND SELF-MAINTENANCE IN CONTEMPORARY AMERICAN LIFE

Abstract. Because actual social experience is often damaging to conceptions of self, individuals in all societies engage in identity work beyond ordinary social interaction. For people in religious groups, identity work may involve the subjective experience of interactions with spirit beings as in altered states of consciousness such as dreams, reverie, or trance. In memories, anticipations, and fantasies, secular Americans, too, may experience gratifying imaginary social interactions when they gain recognition and acclaim from imagined others. Unlike spirit relations these fantasies are not culturally defined as "real." However, like spirit relations, they may have very real effects on self-maintenance.     

A TALE OF TWO CONTROVERSIES: DISSONANCE IN THE THEORY AND PRACTICE OF RATIONALITY

Abstract. The relation between rationality in science and rationality in moral discourse is of interest to philosophers and sociologists of science, to educators and moral philosophers. Apparently conflicting conceptions of rationality can be detected at the core of two current socio-educational controversies: the creationievolution controversy and that concerning "moral education." This paper takes as its starting point the recorded views of participants in these controversies; exhibits the contradictions and their effect on the public; relates these contradictions to developments in the philosophy and history of science; and suggests, in a preliminary way, one approach for dealing with the problem.     

"RATIONALITY" IN SCIENCE AND MORALS

Abstract. Martin Eger's comparison of controversies in science and morals is extended to a consideration of the nature of "rationality" in each. Both theoretical science and moral philosophy are held to be relativist in social and historical terms, but science also has definitive non-relativist pragmatic criteria of truth. The problem for moral philosophy is to delineate its own appropriate types of social criteria of validity.     

Reaching Higher in Community Psychology: Social Problems, Social Settings, and Social Change

Forty years after the founding of community psychology, we have yet to deliver on the full promissory note of our birth, where we were poised to address social problems, social settings, and social change. Despite some success, we are at risk for selling ourselves short, for dying out in the discipline of psychology, and for failing to improve the common good. Given changes in demographics and in the safety net, the problem of entrenched disparities is even more urgent—in perception of the other, in the provision of opportunities for development, and in outcomes. Envisioning and enabling will be critical as we work with unified purpose toward a cumulative science where failure will not be predictable.An earlier version of this paper was presented at the mid-west ECO Conference in Community Psychology held in Saugatuck, Michigan, October 2004.     

Uncertainty about the rest of the sentence

A word-by-word human sentence processing complexity metric is presented. This metric formalizes the intuition that comprehenders have more trouble on words contributing larger amounts of information about the syntactic structure of the sentence as a whole. The formalization is in terms of the conditional entropy of grammatical continuations, given the words that have been heard so far. To calculate the predictions of this metric, Wilson and Carroll's (1954) original entropy reduction idea is extended to infinite languages. This is demonstrated with a mildly context-sensitive language that includes relative clauses formed on a variety of grammatical relations across the Accessibility Hierarchy of Keenan and Comrie (1977). Predictions are derived that correlate significantly with repetition accuracy results obtained in a sentence-memory experiment (Keenan & Hawkins, 1987).     

中国人的求同心理

求同是中国人传统且特有的思维方式。中国人的求同主要表现为从众行为、标准答案“情结”、“听话”教养观和平均主义观念;究其原因,是中国人的尚和心态、关系自我、传统农业经济和封建社会的“大一统”思想造成的;求同心理在增强民族凝聚力抵抗外来侵略、继承传统美德方面发挥积极作用的同时,也给中国人带来了忽略个体、缺乏独立和创造性及容易迷失自我的消极影响;可通过加强逻辑思维、分析思维和自省的认知方式、服从真理而不是权威、批判地继承传统等途径避免求同心理的消极影响。