This paper examines the contribution of the PhD dissertation of the American cytologist Michael F. Guyer (1874-1959) to the early establishment (in 1902-1903) of the parallel relationship between cytological chromosome behaviour in meiosis and Mendel's laws. Guyer's suggestions were among the first, which attempted to relate the variation observed in the offspring in hybridisation studies by a coherent cytological chromosome mechanism to meiosis before the rediscovery of Mendel's principles. This suggested for the first time that the chromosome mechanism involved (...) a conjugation of maternal and paternal chromosomes during the synapsis followed by a segregation of parental chromosomes in the final germ cells and a random union of the final germ cells in the fertilization. It shows that this early suggestion was similar to William Austin Cannon's later chromosome proposal attempting to explain Mendel's principles and had some influence on Walter Sutton's cytological suggestion explaining correctly the behaviour of Mendel's particle by 1903. (shrink)

Recently several philosophers have argued that environmental reform movements cannot halt humankind’s destruction of the biosphere because they still operate within the anthropocentric humanism that forms the root of the ecological crisis. According to “radical” environmentalists, disaster can be averted only if we adopt a nonanthropocentric understanding of reality that teaches us to live harmoniouslyon the Earth. Martin Heidegger agrees that humanism leads human beings beyond their proper limits while forcing other beings beyond their limits as weIl. The doctrine of (...) the “rights of man” justifies human exploitation of nonhuman beings. Paradoxically, however, the doctrine of rights for nonhuman beings does not escape the orbit of humanism. According to Heidegger, a nonanthropocentric conception of humanity and its relation to nature must go beyond the doctrine of rights. We can dweIl harmoniously on Earth only by submitting to our primary obligation: to be open for the Being of beings. We need a new way of understanding Being, a new ethos, that lets beings manifest themselves not merely as objects for human ends, but as intrinsically important. Heidegger calls this ethos the “fourfold” of earth and sky, gods and mortals. Humanists argue that Heidegger is wrong to abandon the principle of human rights in favor of the notion that we are obligated to “let beings be,” while some radical environmentalists accuse hirn of being a humanist because he supposedly overestimates the importance of humankind’s ability to speak. Heidegger insists, however, that language makes possible culture, without which thereis no human experience of nature. An environmentally sound ethos. can arise, according to Heidegger, only from a shift within the cultural heritage of the West. Richard Rorty agrees that we must become open for a new “conversation” with the West, even if this requires abandoning traditionally important fields such as epistemology. The need to develop a new understanding of Being is so great that thinkers from the analytic and continental traditions of philosophy are finally initiating a long-overdue dialogue. (shrink)

This chapter contains sections titled: Introduction Early Species Concepts—Linnaeus Biological Species Concepts Phylogenetic Species Concepts Species Concepts and Speciation Conclusions Postscript: Counterpoint References.

Michael F. Duggan ABSTRACT: This article examines the basis for testing historical claims and proffers the observation that the historical method is akin to the scientific method in that it utilizes critical elimination rather than justification. Building on the critical rationalism of Karl Popper – and specifically the deductive component of the scientific method called ….

This article examines overpopulation as a basis for historical interpretation. Drawing on the ideas of T.R. Malthus, Elizabeth Kolbert, John Lovelock, Lynn Margulis, and Edward O. Wilson, I make the case that the only concept of ‘progress’ that accurately describes the human enterprise is the uncontrolled growth of population. I explain why a Malthusian/Gaia interpretation is not a historicist or eschatological narrative, like Hegelian idealism, Marxism, fundamentalist religion, or ‘end of history’ neoliberalism. My article also includes a discussion of the (...) ideas and prescriptions of contemporary commentators like physicist, Adam Frank, and the philosophers, John Gray, and Roy Scranton. What makes my article distinctive is bringing together ideas of population theory through a lens of sociobiology and post-humanist philosophy. Through this interpretive synthesis, I form a basis for recasting history as the record of the growing imbalance of our species in light of the unprecedented crises of the environment that are its byproduct. I conclude with the idea that regardless of whether the world is dying or simply going through a fundamental chaotic transformation, the role of the critical-rational historian remains the same: to tell the truth as best as she or he can know it. (shrink)

Recently several philosophers have argued that environmental reform movements cannot halt humankind’s destruction of the biosphere because they still operate within the anthropocentric humanism that forms the root of the ecological crisis. According to “radical” environmentalists, disaster can be averted only if we adopt a nonanthropocentric understanding of reality that teaches us to live harmoniouslyon the Earth. Martin Heidegger agrees that humanism leads human beings beyond their proper limits while forcing other beings beyond their limits as weIl. The doctrine of (...) the “rights of man” justifies human exploitation of nonhuman beings. Paradoxically, however, the doctrine of rights for nonhuman beings does not escape the orbit of humanism. According to Heidegger, a nonanthropocentric conception of humanity and its relation to nature must go beyond the doctrine of rights. We can dweIl harmoniously on Earth only by submitting to our primary obligation: to be open for the Being of beings. We need a new way of understanding Being, a new ethos, that lets beings manifest themselves not merely as objects for human ends, but as intrinsically important. Heidegger calls this ethos the “fourfold” of earth and sky, gods and mortals. Humanists argue that Heidegger is wrong to abandon the principle of human rights in favor of the notion that we are obligated to “let beings be,” while some radical environmentalists accuse hirn of being a humanist because he supposedly overestimates the importance of humankind’s ability to speak. Heidegger insists, however, that language makes possible culture, without which thereis no human experience of nature. An environmentally sound ethos. can arise, according to Heidegger, only from a shift within the cultural heritage of the West. Richard Rorty agrees that we must become open for a new “conversation” with the West, even if this requires abandoning traditionally important fields such as epistemology. The need to develop a new understanding of Being is so great that thinkers from the analytic and continental traditions of philosophy are finally initiating a long-overdue dialogue. (shrink)

* This paper was originally given as one of the Doris Lee Lectures on February 20th 1975, at the University of London Institute of Education.

Berichte zur Wissenschaftsgeschichte, Volume 45, Issue 3, Page 434-451, September 2022.

Berichte zur Wissenschaftsgeschichte, Volume 45, Issue 3, Page 434-451, September 2022.

Introduction There has been philosophical discussion for centuries on the nature and scope of human life. Lucretius, for example, contends that human life ...

First Logic is an introduction to the study of logic. Understanding the concepts of validity, invalidity, and acceptability, unacceptability of arguments is the primary focus of this book. The first chapter introduces the reader to some of the basic concepts, such as validity, soundness, and acceptability. Chapters two and three are devoted to Aristotelian logic, including the traditional square of opposition and Venn diagrams for sentences and arguments. Chapter four is a treatment of a number of important informal fallacies of (...) reasoning . Chapters five through eight are on various aspects of formal/symbolic logic: translating from natural language to the artificial language of logic; truth tables and truth trees; the method of natural deduction; predicate logic, including the logic of relations; and the concept and use of identity and its symbolization. (shrink)

This third edition includes expanded exercise sets for all chapters, updated examples, and extended discussion of concepts such as inductive reasoning, truth trees, and natural deduction. This text will be helpful to all those who are interested in learning about the discipline of logic.

ABSTRACTIs it possible to reconcile the concept of conscious agency with the view that humans are biological creatures subject to material causality? The problem of conscious agency is complicated by the tendency to attribute autonomous powers of control to conscious processes. In this paper, we offer an embodied process model of conscious agency. We begin with the concept of embodied emergence – the idea that psychological processes are higher-order biological processes, albeit ones that exhibit emergent properties. Although consciousness, experience, and (...) representation are emergent properties of higher-order biological organisms, the capacity for hierarchical regulation is a property of all living systems. Thus, while the capacity for consciousness transforms the process of hierarchical regulation, consciousness is not an autonomous center of control. Instead, consciousness functions as a system for coordinating novel representations of the most pressing demands placed on the organism at any given time.... (shrink)

All species continuously evolve to adapt to changing environments. The genetic variation that fosters such adaptation is caused by a plethora of mechanisms, including meiotic recombination that generates novel allelic combinations in the progeny of two parental lineages. However, a considerable number of eukaryotic species, including many fungi, do not have an apparent sexual cycle and are consequently thought to be limited in their evolutionary potential. As such organisms are expected to have reduced capability to eliminate deleterious mutations, they are (...) often considered as evolutionary dead ends. However, inspired by recent reports we argue that such organisms can be as persistent as organisms with conventional sexual cycles through the use of other mechanisms, such as genomic rearrangements, to foster adaptation. (shrink)

Schober et al. describe two studies on how survey interview respondents misunderstand interview questions. After answering a survey, participants are given standardized definitions of the questions they have just answered. Even apparently simple questions such as “Have you smoked more than 100 cigarettes?” are interpreted very differently by participants. Moreover, clarifying the meaning of the definitions with the interviewer does not always help resolve the miscommunication.

Fremtidsstaten og samfundsmaskinen – Social ingeniørkunst mellem teknokrati og produktivisme.

Original essays by leading scholars on Plotinus' philosophy of nature.

This paper compares Plotinus’s neoplatonic conception and account of time with Bergson’s and Husserl’s phenomenologic conceptions and accounts of it. I argue that despite fundamental differences owing to their respective approaches, their conceptions and accounts are remarkably comparable, especially in considering time to play a fundamental role in the organic unity of our physical environment—in what I characterize also as the continuously and intrinsically connected sequentiality of its events, processes, and constituents—in Plotinus’s case, of our physical environment as such; in (...) Bergson’s and Husserl’s case, as it manifests itself to us in experience and our reflective awareness of that experience. (shrink)

This paper compares Plotinus’s neoplatonic conception and account of time with Bergson’s and Husserl’s phenomenologic conceptions and accounts of it. I argue that despite fundamental differences owing to their respective approaches, their conceptions and accounts are remarkably comparable, especially in considering time to play a fundamental role in the organic unity of our physical environment—in what I characterize also as the continuously and intrinsically connected sequentiality of its events, processes, and constituents—in Plotinus’s case, of our physical environment as such; in (...) Bergson’s and Husserl’s case, as it manifests itself to us in experience and our reflective awareness of that experience. (shrink)

The authors attempt to prove that single energy arrays cannot specify reality. We offer contrary evidence that motion structures the acoustic array to specify fundamental attributes of the source. Against direct detection in general, we cite evidence that humans weight acoustic inputs differentially when making perceptual judgments of auditory motion.