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)

Appearing in English for the first time, Schelling’s 1842 lectures develop the idea that many philosophical concepts are born of religious-mythological notions.

This is an English translation of Schelling's Ideas for a Philosophy of Nature (first published in 1797 and revised in 1803), one of the most significant works in the German tradition of philosophy of nature and early nineteenth-century philosophy of science. It stands in opposition to the Newtonian picture of matter as constituted by inert, impenetrable particles, and argues instead for matter as an equilibrium of active forces that engage in dynamic polar opposition to one another. In the revisions of (...) 1803 Schelling incorporated this dialectical view into a neo-Platonic conception of an original unity divided upon itself. The text is of more than simply historical interest: its daring and original vision of nature, philosophy, and empirical science will prove absorbing reading for all philosophers concerned with post-Kantian German idealism, for scholars of German Romanticism, and for historians of science. (shrink)

The use of biotechnology in food productiongives rise to consumer concerns. The term ``consumerconcern'' is often used as a container notion. Itincludes concerns about food safety, environmental andanimal welfare consequences of food productionsystems, and intrinsic moral objections againstgenetic modification. In order to create clarity adistinction between three different kinds of consumerconcern is proposed. Consumer concerns can be seen assigns of loss of trust. Maintaining consumer trustasks for governmental action. Towards consumerconcerns, governments seem to have limitedpossibilities for public policy. Under current (...) WTOregulations designed to prevent trade disputes,governments can only limit their policies to 1) safetyregulation based upon sound scientific evidence and 2)the stimulation of a system of product labeling. Ananalysis of trust, however, can show that ifgovernments limit their efforts in this way, they willnot do enough to avoid the types of consumer concernsthat diminish trust. The establishment of a technicalbody for food safety – although perhaps necessary –is in itself not enough, because concerns that relatedirectly to food safety cannot be solved by ``pure''science alone. And labeling can only be a good way totake consumer concerns seriously if these concerns arerelated to consumer autonomy. For consumer concernsthat are linked to ideas about a good society,labeling can only provide a solution if it is seen asan addition to political action rather than as itssubstitution. Labeling can help consumers take uptheir political responsibility. As citizens, consumershave certain reasonable concerns that can justifiableinfluence the market. In a free-market society, theyare, as buyers, co-creators of the market, andsocietal steering is partly done by the market.Therefore, they need the information to co-create thatmarket. The basis of labeling in these cases, however,is not the good life of the individual but thepolitical responsibility people have in their role asparticipants in a free-market. Then, public concernsare taken seriously. Labeling in that case does nottake away the possibilities of reaching politicalgoals, but it adds a possibility. (shrink)

The author is a student of the renowned German medievalist, Josef Koch. Having himself worked for more than ten years on medieval commentaries on Aristotle's Physics and Metaphysics, Zimmermann wishes to make the result of his researches available to others. To reduce his mass of material to tractable dimensions, he follows the pattern of F. Stegmüller's Repertorium of commentaries on Lombard's Sentences, giving first a description of the manuscripts examined, then a transliteration of the titles of all questions treated (...) in the respective commentaries, together with the folio at which each question begins, and grouping the works of identified authors before the anonymous works in each category. The first volume is limited to manuscripts contained in collections at Munich, Innsbruck, Cambridge, Oxford, London, Paris, and Cambrai; a second volume, with wider coverage, is promised shortly. The majority of the authors reported on in the first volume are anonymous, but those identified include Adam of Bocfeld, Augustine Triumphus of Ancona, Boethius of Dacia, Geoffrey of Aspall, John of Wacfeld, Peter of Alvernia, Radulfus Brito, Siger of Brabant, Simon of Faversham, William Bonkys, William of Chelvestun, and William of Clifford. This, like Stegmüller's, is clearly a reference work for scholars, and its principal merit lies in that it provides an accurate list of physical and metaphysical topics being discussed at centers of learning in England and on the Continent from the mid-thirteenth to the mid-fourteenth centuries. It was during this period, of course, that Aristotle was having his greatest impact on Latin Christendom. The questions listed by Zimmermann have their intrinsic interest, but even more they provide historians of science and of philosophy with considerable material for investigation, for analysis, and, hopefully, for the dating and identification of the works listed as anonymous. Zimmermann makes no attempt at completeness of reference, supplying only a few citations in his notes; on Geoffrey of Aspall, for instance, he refers only to Emden's Biographical Register, missing Enya MacRae's Geoffrey of Aspall's Commentaries on Aristotle, Medieval and Renaissance Studies 6. Regrettably the volume has neither a subject index nor a register of names, deficiencies that seriously impair its usefulness--W. A. W. (shrink)

Schelling’s masterpiece investigating evil and freedom.

Schelling's first systematic attempt to articulate a complete philosophy of nature.

Colin McGinn urged that while a brain state P explains consciousness, a conception P is cognitively inaccessible to us. This paper argues that McGinn's argument for his form of materialism is committed to P being epiphenomenal or causally inert relative to such things as the movements of our bodies. As a result, McGinn's materialism creates a duality in the brain and thereby faces the same problem of epiphenomenalism which plagues the Cartesian dualist.