On the theory of meaning and reference (semantics) as interpretated by W.V. Quine; a study.

This paper assesses the effect of DNA barcoding—the use of informative genetic markers to identify and discriminate between species—on taxonomy. Throughout, we interpret this in terms of _varipraxis_, a concept we introduce to make sense of the treatment of biological variation by scientists and other practitioners. From its inception, DNA barcoding was criticised for being reductive, in attempting to replace multiple forms of taxonomic evidence with just one: DNA sequence variation in one or a few indicative genes. We show, though, (...) how DNA barcoding has not narrowed or reduced taxonomy in the way it was projected to. We examine the development and implementation of DNA barcoding across three kingdoms of life: animals, plants, and protists. Through this, we demonstrate that for DNA barcoding to work, the range of acceptable intra-specific variation needs to be demarcated from variation deemed to be characteristic of inter-specific differences. Consequently, biological processes responsible for particular patterns of variation need to be investigated and understood. This encourages an integrative disposition towards understanding and explaining the evolutionary processes affecting the rate and nature of change at the nucleotide level. We detail how the impact of DNA barcoding has manifested differently across the three kingdoms we examine, assessing this in terms of the ontological commitments that are held and instantiated in practice. Based on this evaluation, we consider the problem of studying multi-kingdom communities, and assess the consequences of our analysis for understanding classification and taxonomy. (shrink)

The present volume may be regarded as a sound introduction to Gramsci's philosophy. The work focuses primarily upon the Prison Notebooks from which Nemeth attempts to reveal Gramsci's "formidable epistemology" which is presumably phenomenological in character. According to Nemeth, "Gramsci's great originality within the Marxist tradition lies in his adumbration of a transcendental, indeed a phenomenological perspective". It seems highly peculiar that Husserl's ideas should be appropriated in a study that highlights a distinctive Italian philosophy of praxis. Nemeth's numerous references (...) to phenomenology, which are made in an attempt to demonstrate Gramsci's "absolute historicism," fail to reveal both the meaning of phenomenology per se and the significance of relating the Husserlian method of thought to Gramsci's revolutionary conception of action. That the thought of the Prison Notebooks "can only maintain its raison d'être by drawing ever closer to Husserlian phenomenology" remains a mere assertion. (shrink)

It now seems technically feasible to culture human embryos beyond the “fourteen‐day limit,” which has the potential to increase scientific understanding of human development and perhaps improve infertility treatments. The fourteen‐day limit was adopted as a compromise but subsequently has been considered an ethical line. Does it remain relevant in light of technological advances permitting embryo maturation beyond it? Should it be changed and, if so, how and why? What justifications would be necessary to expand the limit, particularly given that (...) doing so would violate some people's moral commitments regarding human embryos? Robust stakeholder engagement preceded adoption of the fourteen‐day limit and should arguably be part of efforts to reassess it. Such engagement could also consider the need for enhanced oversight of human embryo research. In the meantime, developing and implementing reliable oversight systems should help foster high‐quality research and public confidence in it. (shrink)

This book is an attempt to examine the concept of "public interest" and show that, while it has no general, unchanging, descriptive meaning applicable to all policy decisions, it does have a non-arbitrary descriptive meaning which can be determined in particular cases. This meaning can be found through "reasoned discourse" which attempts to relate the anticipated effects of a policy to community values. The concept of public interest is, the author argues, neither a vacuous phrase nor a verbal device useful (...) only for propaganda purposes. The author then attempts to see whether "reason" as it appears in "reasoned discourse" mentioned above can carry the burden assigned to it. In a close examination of what "giving reasons" consists of in the absence of a hierarchy of values, the author shows that it amounts to more than an infinite logical regress. The author admits that there remains an arbitrary element in value judgments which is much smaller and capable of more precise definition than is usually thought). In situations of conflict and diversity of values among reasoning men, the dilemma is resolved by the principle of "authority." Authority itself is required to justify its decisions by giving reasons, but precisely what authority is, beyond this giving of reasons based on somewhat arbitrary values, is not examined.—S. W. (shrink)

George W. S. Bailey. prove that mental phenomena in general are not self- intimating in sense (3). Armstrong's argument is based on two claims: (a) Introspective awareness and its objects are distinct existences. (b) If introspective awareness ...