Conservative ethical systems, particularly organized religions, are frequently at odds with the means, if not the goals of the new reproductive technologies. Among the most problematic measures adopted in recent years to allow childless women to raise genetically related offspring is surrogate motherhood. Traditional Jewish law, or Halakha, notwithstanding this reluctance, is, nevertheless, more likely than many others to find reasons to justify the practice, given its well-known stance viz procreation and its leniency regarding the new reproductive technologies. In the (...) following article, we ask whether Halakha, which allows abortion to save the life of a mother, would sanction the employment of a surrogacy arrangement in the case where pregnancy threats her life, in order to save the fetus as well. (shrink)

This paper is based on a semantic foundation of quantum logic which makes use of dialog-games. In the first part of the paper the dialogic method is introduced and under the conditions of quantum mechanical measurements the rules of a dialog-game about quantum mechanical propositions are established. In the second part of the paper the quantum mechanical dialog-game is replaced by a calculus of quantum logic. As the main part of the paper we show that the calculus of quantum logic (...) is complete and consistent with respect to the dialogic semantics. Since the dialoggame does not involve the 'excluded middle' the calculus represents a calculus of effective (intuitionistic) quantum logic. In a forthcoming paper it is shown that this calculus is equivalent to a calculus of sequents and more interestingly to a calculus of propositions. With the addition of the 'excluded middle' the latter calculus is a model for the lattice of subspaces of a Hilbert space. (shrink)

Modern philosophical biology has been dominated by the idea of mechanism. Even the attempts to escape from mechanism, such as the theories of vitalism and holism, covertly assume the mechanistic hypothesis while surrounding it with an aura of mysticism. The mechanistic approach is the result of applying the methods of physics to the realm of biology. The immense prestige of physics has tended to disguise the fact that biology is a science in its own right, with autonomous principles. The purpose (...) of the article is to develop the philosophy of organism, first systematically elaborated by Whitehead, and to seek to demonstrate that organic being is unintelligible without the concept of purposiveness and hence of value. This necessarily leads to the return of metaphysics in the form of metabiology.RésuméLa biologie philosophique moderne est dominée par l'idée de mécanisme. Il n'est pas jusqu'aux tentatives d'échapper au mécanisme, telle par exemple la théorie du vitalisme et celle du holisme, qui n'assument implicitement l'hypothése mécaniste tout en l'entourant d'une aura de mysticisme. La conception mécaniste résulte de l'applicatio n des méthodes de la physique au domaine de la biologie. L'immense prestige de la physique a tendu à déguiser le fait pourtant reel que la biologie est une science qui jouit de sa propre souveraineté et de principes autonomes. Le but de cet article est d'exposer une philosophie de l'organisme élaborée systématiquement par Whitehead pour la premiére fois et de chercher ensuite à démontrer que tout être organique est inintelligible en dehors du concept de finalité et, par conséquent, de valeur. Ceci conduit nécessairement à un renouveau de la métaphysique sous forme de métabiologie. (shrink)

"Aristotle was a systematic writer who often cross-referred to the definitions of terms given elsewhere in his work. Book 5 of the Metaphysics is important because it consists of definitions of the main uses of key terms in Aristotle's philosophy, and it is extremely valuable to have a commentary on this important text by Alexander of Aphrodisias, the leading commentator of his school. Alexander provides a detailed commentary on all of the thirty terms analysed in Book 5, weighing alternative interpretations (...) of what Aristotle says one against another, defending Peripatetic views against actual and possible criticisms, and attempting to integrate what is said in Book 5 into the context of the Metaphysics as a whole."--Bloomsbury Publishing. (shrink)

An examination of Cassirer’s conception of symbolizing, which is born in his critique of Kant, will show that objectifying human experience without external absolutes is grounded in affect, not cognition. When there is no external absolute to guide objectifying, then the roots of objectifying begin with how we are affected by experience and led to reflect. Affect formulates how we become conscious of what there is and express this consciousness so as to objectify it. Affect thus has an indirect influence (...) on consciousness and objectifying. Cassirer expands the scope of the free play of the imagination, which Kant restricted to aesthetic judgments, to account for how order arises through any modality when a rule is not given. He anchors this generative source in human expression itself, and thereby prevents objectifying from sinking into relativism. Affect is thus shown to play a regulative role in consciousness when we objectify human experience without external absolutes. (shrink)

Given an admissible indexing φ of the countable atomless Boolean algebra B, an automorphism F of B is said to be recursively presented (relative to φ) if there exists a recursive function $p \in \operatorname{Sym}(\omega)$ such that F ⚬ φ = φ ⚬ p. Our key result on recursiveness: Both the subset of $\operatorname{Aut}(\mathscr{B})$ consisting of all those automorphisms which are recursively presented relative to some indexing, and its complement, the set of all "totally nonrecursive" automorphisms, are uncountable. This arises (...) as a consequence of the following combinatorial investigations: (1) A comparison of the cycle structures of f and f̄, where f is a permutation of some free basis of B and f̄ is the automorphism of B induced by f. (2) An explicit description of the permutations of ω whose conjugacy classes in $\operatorname{Sym}(\omega)$ are (a) uncountable, (b) countably infinite, and (c) finite. (shrink)

In a recent article Professor W. Beare casts doubt on the authenticity of XOPOY at certain places in the Plutus. Of 626–7, he observes: ‘…the editors assume an interlude and insert in Aristophanes’ text. But what the scholiast says is . The poet “ought to have” inserted a choral interlude and “waited a little” until someone could return from the temple with news of the cure.

In this article, the author focuses on the allocation of decision-making authority between parents and physicians. She argues that parents should have substantial room to decide whether genetic testing is good for their child and that they may appropriately consider interests in addition to those of their child in making such choices. A physician, however, may refuse to act pursuant to parental views about testing, when in the physician's view, the parents' choices would pose a risk of significant harm to (...) the child. The balance of control between parents and physicians is illustrated by discussion of a series of case vignettes. Refusal to perform requested testing is most often warranted for testing for carrier status and for genetic predisposition to late onset disease. The author concludes her analysis by discussing why it is appropriate to give increasing deference to the views of the child as the child grows older. (shrink)