Tomis Kapitan

MEDIEVAL LOGICCARLOS A. DUFOUR, Die Lehre der Proprietates Terminorum. Sinn und Referenz in mittelalterlicher Logik. München, Hamden, Wien: Philosophia, 1989. 312 pp. 148 DM.NORMAN KRETZMANN and BARBARA ENSIGN KRETZMANN The Sophismata of Richard Kilvington. Oxford: Published for the British Academy by Oxford University Press, 1990. xx + 156 pp. £27.50.LOGIC AND MATHEMATICSSOULEYMANE BACHIR DIAGNE, Boole. Paris: Editions Belin, 1989. 262pp. 75 Ffr.M.-M. TOEPELL, Über die Entstehung von David Hilberts “Grundlagen der Geometrie”. Göttingen: Vandenhoeck und Ruprecht, 1986. vii + 293 pp. 82 DM.VOLKER PECKHAUS, Hilbertprogramm und Kritische Philosophie. Das Göttinger Model1 interdisziplinarer Zusammenärbeit zwischen Mathematik und Philosophie. Gottingen: Vandenhoeck und Ruprecht, 1990. vi + 291 pp. 78 DM.E. WELTI, Die Philosophie des Strikten Finitismus, Entwicklungstheoretische und mathematische Untersuchungen iiber Unendlichkeitsbegriffe in Ideengeschichte und Mathematik, Bern, Frankfurt am Main und New York: Peter Lang, 1986. xxix + 652pp. $79.90.Philosophy of logicMARK A. NOTTURNO, Perspectives on psychlogism. Leiden, New York, Copenhagen and Cologne: E. J. Brill, 1989. viii + 504 pp. 225 Dfl/$112.50.ROBERT N. MCLAUGHLIN, On the logic of ordinary conditionals. Albany: State University of New York Press, 1990. xvii + 202 pp. $54.50 /$17.95.JAAKKO HINTIKKA and MERRILL HINTIKKA, The logic of epistemology and the epistemology of logic: selected essays. Dordrecht, Boston and London: Kluwer Academic Publishers, 1989.J. NORMAN and R. SYLVAN, Directions in relevant logic. Foreword by N. D. Belnap. Dordrecht, Boston and London: Kluwer Academic Publishers, 1989. xii + 453 pp. £72.00.LOGIC AND LANGUAGEC. J. F. WILLIAMS, What is identity? Oxford: Clarendon Press, 1989. xx + 207 pp. £25.00.GREGORY MCCULLOCH, The game of the name. Oxford: Oxford University Press, 1989. xvi + 320pp. £30.00, £9.95.GRAEME FORBES, Languages of possibility. Oxford: Basil Blackwell, 1989. x + 181 pp. £27.50.

According to C. S. Peirce, abduction is a rational attempt to locate an explanation for a puzzling phenomenon, where this is a process that includes both generating explanatory hypotheses and selecting certain hypotheses for further scrutiny. Since inference is a controlled process that can be subjected to normative standards, essential to his view of abductive rasoning is that it is correlated to a unique species of correctness that cannot be reduced to deductive validity or inductive strength. This irreducibility claim is of considerable importance for the logical and epistemological scrutiny of scientific methods, but it is not clear that Peirce produced a convicing argument for it. To the contrary, when the full structure of abductive argumentation is clarified, especially as presented in Peirce’s later writings on the topic, a good case can be made for viewing every inferential step in the abductive process as dissolving into familiar forms of deductive and inductive reasoning. Specifically, hypothesis-selection is a special type of practical inference that, if correct, is deductively valid, while the creative phase, hypothesis-generation, is not inferential at all. Once this is understood, it emerges that the familiar descriptions of abduction as “inference to the best explanation” or as a process of “belief revision” are, at best, misleading.

In "Omniprescient Agency" (Religious Studies 28, 1992) David P. Hunt challenges an argument against the possibility of an omniscient agent. The argument—my own in "Agency and Omniscience" (Religious Studies 27, 1991)—assumes that an agent is a being capable of intentional action, where, minimally, an action is intentional only if it is caused, in part, by the agent's intending. The latter, I claimed, is governed by a psychological principle of "least effort," viz., that no one intends without antecedently feeling that (i) deliberate effort is needed to achieve desired goals, (ii) such effort has a chance of success, and (iii) it is yet contingent whether the effort will be expended and the goals realized. The goals can be anything from immediate intentional doings, tryings or basic actions, to remote and perhaps unlikely consequences of actions, e.g., global justice. The thrust of the principle is that it would be impossible for a wholly rational self-aware agent to intend without a background presumption of an open future as concerns the desired state and the means to it. But this presumption embodies a sense of contingency which, in turn, requires an acknowledged ignorance about what the future holds, otherwise the future would appear closed relative to present knowledge with the desired state presented as either guaranteed (necessary) or ruled out (impossible). Regardless whether this self-directed attitude is accurate, it follows that intentional action precludes complete knowledge of one's present and future. Consequently, no omniscient or omniprescient being can be an agent.

Towards the end of the first world war, a “principle of self-determination” was proposed as a foundation for international order. In the words of its chief advocate, U.S. President Woodrow Wilson, it specified that the “settlement of every question, whether of territory, of sovereignty, of economic arrangement, or of political relationship” is to be made “upon the basis of the free acceptance of that settlement by the people immediately concerned and not upon the basis of the material interest or advantage of any other nation or people which may desire a different settlement for sake of its own exterior influence or mastery” (Wilson 1927, 233). The principle played a significant role in deliberations about lands newly liberated by the first world war, and, in the aftermath of the second, it was enshrined within Article 1 of the United Nations Charter which called upon member nations “to develop friendly relations among nations based on respect for the principle of equal rights and self-determination of peoples.” Its status within international law was further heightened by the 1966 Covenants on Civil and Political Rights and on Economic Social and Cultural Rights, whose first articles specify the following: “All peoples have the right of self-determination. By virtue of that right they freely determine their political status and freely pursue their economic, social, and cultural development.” In 1970, General Assembly Resolution 2625 added that, “every state has the duty to respect this right in accordance with the provision of the Charter.”.

Indexicals are inevitably autobiographical, even when we are not talking about ourselves. For example, if you hear me say, "That portrait right there is beautiful," you can surmise not only that I ascribe beauty to an object of my immediate awareness but also something about my spatial relation to it. Again, if I praise you directly within earshot of others by using the words, "You did that very well!," my concern need not be to cause them to think the exact thought I have; they might not be in a position to address you as you and I might not care what they think of your performance. My purpose is to get them to ascribe to me an attitude that I express with a second-person indexical, to convince them that I am an encouraging and supportive person inasmuch as I addressed someone with words of praise. Indexicals are autobiographical not only because they issue from a speaker--all utterances do--but because they reveal something about the speaker's orientation toward and encounter with objects in a way that non-indexical language fails to do. For this reason, care must be taken in reporting indexically-expressed thoughts. Suppose the Chair of my Department informs me, (1)I am upset about the Dean's report. I cannot relate what he said by reiterating his words within indirect discourse, viz., (2)The Chair said that I am upset about the Dean's report. Because 'I' expresses speaker's reference, my assertion of (2) would cause a hearer to misconstrue who is said to be upset.i Alternatively, the sentence, (3)The Chair said that the Chair is upset about the Dean's report

According to Hector-Neri Castañeda, indexical reference is our most basic means of identifying the objects and events we experience and think about. Its tokens reveal our own part in the process by denoting what are "referred to as items present in experience" (Castañeda 1981, 285-6). If you hear me say, "Take that box over there and set it next to this box here," you learn something about my orientation towards the referents in a way that is not conveyed by, "Take the red box and set it next to the blue box." My indexical tokens express what they do not only because they issue from a unique spatio-temporal perspective that I happen to occupy, but also because they reflect my encounter with referents that are differently situated in that perspective. From your perspective, my here might be your there, my you your she, and within my own, a this differs from a that and one this diverges from another. Encounter and orientation within a perspective are the essential ingredients in indexical identification without which particular 'this's, 'that's, 'then's, 'here's, and 'beyond's would be denuded of individuating powess.1 There are several consequences of this description. First, indexical reference is ephemeral because perspective is constantly changing, rendering the indexical status of an entity relative to a given perspective temporary: 1 A this quickly turns into a that, and soon enough it is lost to experience and is not even a remote that; a you goes away and is replaced by another . . . Nothing is really an enduring you -- except God perhaps for the abiding mystic. (Castañeda 1989a, 69) Second, indexical reference is irreducible since non-indexical mechanisms of reference fail to express the subject's involvement or encounter with the referents that indexicals convey. Nor can the various indexicals be reduced to each other.2 Third, because each perspective is unique, indexical reference is essentially subjective..

The use of single letters in displaying patterns, functions, generalizations, and unknowns, dominates mathematical expression, and for that reason, appears in every domain of theoretical and technical discourse employing even the slightest bit of mathematical language. These variables, as they have come to be called, are the very mark of abstract power and precision, ingenious tools for expressing functionality and valid formulae and, thereby, for providing solutions to types of problems as well as facilitating the calculation of unknowns. Compare, for example, the ease with which we grasp and work with the formula.

The use of predicate and sentential operators to express the practical modalities -- ability, control, openness, etc. -- has given new life to a fatalistic argument against determinist theories of responsible agency. A familiar version employs the following principle: the consequences of what is unavoidable (beyond one's control) are themselves unavoidable. Accordingly, if determinism is true, whatever happens is the consequence of events in the remote past, or, of such events together with the laws of nature. But laws and the remote past are not under our control and, by the principle, neither are their consequences. Therefore, none of our choices and actions, nor anything that results from them, is under our control.1 Whether refinements of the closure principle underlying this unavoidability argument are acceptable depends upon the precise sense of 'consequence' and 'unavoidable' involved. Roughly, a proposition P is a consequence of a set of propositions M iff it is impossible that P be false when each member of M is true, or, conversely, when M necessitates P. Since P is unavoidable for S when P is true and S is (was) unable to prevent P from being true, it might seem that if P is unavoidable the same should hold of what is necessitated by P. There is, in fact, 1 an easy defense of the principle which utilizes the incompatibilist condition that S is able to do action K only if it is as yet undetermined whether or not S will K. With it, there is no question but that one is unable to accomplish what is already determined by what one was unable to prevent. Of course, this reasoning is unlikely to impress the compatibilist who rejects the condition outright and, expectedly, it is not the procedure of the proponents of the unavoidability argument. The latter might rest content with appeals to intuition, but more significant are defenses of the closure principle and independent derivations of the unavoidability argument that rely upon distinct principles concerning the logic of the practical modalities, for example, closure of ability under entailment (Cross 1986, Brown 1988) or, claims about the "fixity of the past" and the "inescapability of laws" (Ginet 1990)..

Terrorism, as a form of politically motivated violence, is as ancient as organized warfare itself, emerging as soon as one society, pitted against another in the quest for land, resources, or domination, was moved by a desire for vengeance or found advantages in military operations against noncombatants or other ‘soft’ targets. It is sanctioned and glorified in holy scriptures and has been part of the genesis of states and the expansion of empires from the inception of recorded history. The United States itself emerged through the systematic ethnic cleansing of native Americans, a nearly 300-year campaign that featured the destruction of homes and crops, the theft of land, forced expulsions, massacres, and tears.1 While terrorist violence has been employed by both sides in the conflict over Palestine for over 80 years, the prevalence of the rhetoric of ‘terror’ to describe Arab violence against Israeli and Western targets is a more recent phenomenon. For more than three decades, this rhetoric has fostered the popular perception that Arab terrorism is the central problem in the Middle East crisis, and that once solved, progress can be made on other issues. Nothing could be more illusory. The Western obsession with Arab terrorism not only overlooks the fact that terrorist activity between Arabs and Jews has been reciprocal, but, more generally, that attempts to remove an effect without touching its causes are utterly futile. Terrorism between Palestinian Arabs and Israeli Jews is the product of deep divisions, entrenched strategies, and fundamental grievances and will not disappear so long as both sides cling to their present political ambitions and convictions. No informed discussion of its normative status can ignore its historical and political context. At..