George Boole published the pamphlet The Mathematical Analysis of Logic in 1847. He believed that logic should belong to a universal mathematics that would cover both quantitative and nonquantitative research. With his pamphlet, Boole signalled an important change in symbolic logic: in contrast with his predecessors, his thinking was exclusively extensional. Notwithstanding the innovations introduced he accepted all traditional Aristotelean syllogisms. Nevertheless, some criticisms have been raised concerning Boole’s view of Aristotelean logic as the solution of algebraic equations. In order (...) to circumvent such criticisms, we show here how Boole’s conclusions may be deduced from the axioms and inference rules proposed in his pamphlet, from which Aristotle’s deductions in Prior Analytics (including those that are completed through an impossibility) can be stated as theorems. We clarify his method for dealing with both universal and particular premises by means of his symbol v and demystify some criticisms concerning the way he expressed particular premises. Boole’s conclusions for some of those premises for which according to Aristotle there is no deduction are also discussed. The deductive system presented here has the potential to provide a new perspective on Boole’s approach to logic in The Mathematical Analysis of Logic. (shrink)

Public opinion can affect the adoption of genome editing technologies. In food production, genome editing can be applied to a wide range of applications, in different species and with different purposes. This study analyzed how the public responds to five different applications of genome editing, varying the species involved and the proposed purpose of the modification. Three of the applications described the introduction of disease resistance within different species, and two targeted product quality and quantity in cattle. Online surveys in (...) Canada, the US, Austria, Germany and Italy were carried out with a total sample size of 3698 participants. Using a between-subject design, participants were confronted with one of the five applications and asked to decide whether they considered it right or wrong. Perceived risks, benefits, and the perception of the technology as tampering with nature were surveyed and were complemented with socio-demographics and a measure of the participants’ moral foundations. In all countries, participants evaluated the application of disease resistance in humans as most right to do, followed by disease resistance in plants, and then in animals, and considered changes in product quality and quantity in cattle as least right to do. However, US and Italian participants were generally more positive toward all scenarios, and German and Austrian participants more negative. Cluster analyses identified four groups of participants: ‘strong supporters’ who saw only benefits and little risks, ‘slight supporters’ who perceived risks and valued benefits, ‘neutrals’ who showed no pronounced opinion, and ‘opponents’ who perceived higher risks and lower benefits. This research contributes to understanding public response to applications of genome editing, revealing differences that can help guide decisions related to adoption of these technologies. (shrink)

This paper describes the topological aspect of a logic-based, artificial intelligence approach to formalising the qualitative description of spatial properties and relations, and reasoning about those properties and relations. This approach, known as RCC theory, has been under development for several years at the University of Leeds. The main rationale for this project is that qualitative descriptions of spatial properties and relationships, and qualitative spatial reasoning, are of fundamental importance in human thinking about the world: even where quantitative spatial data (...) are most important, they must be attached to the components of a perceived spatial structure if we are to make use of them. RCC theory covers other qualitative aspects of spatial description and reasoning, but the topological properties and relations of spatially extended entities are fundamental to our work. The topological formalisms used by mathematicians are, in general, not well suited to the task of formalising the kinds of ‘common-sense’ or ‘everyday’ qualitative spatial description and reasoning which are our primary interest. Nevertheless, we must come to grips with the concepts of topology as practised by mathematicians if we are not to risk constantly ‘reinventing wheels’. (shrink)

This analysis examines the practice of care providers in residential aged care lying to residents with dementia. Qualitative data were collected through multiple methods. Data here represents perceptions from registered and enrolled nurses, personal care assistants, and allied health professionals from five residential aged care facilities located in Queensland, Australia. Care providers in residential aged care facilities lie to residents with dementia. Lying is conceptualized as therapeutic whereby the care provider’s intent is to eliminate harm and also control behaviour. Care (...) providers of residents with dementia in RACFs need guidance around lying. An ethical framework cognisant of an ethical theory of good and ethical theory of right supplemented by a theory of virtue is proposed. A complimentary four stage communication strategy that promotes truth telling as a first option while also recommending the lie as a suitable strategy is also promoted. (shrink)

The author, head of a teaching hospital surgical unit, argues that the medical curriculum must ensure that all students are exposed to a minimum of ethical discussion and decision-making. In describing his own approach he emphasises the need to show students that it is 'an intensely practical subject'. Moreover, he reminds them that moral dilemmas in medicine--perhaps a better term than medical ethics--are unavoidable in clinical practice. Professor Johnson emphasises the need for small group teaching and discussion of real cases, (...) preferably chosen and 'worked up' by individual students. He suggests that ethical issues could profitably be introduced into written, oral and clinical examinations. (shrink)

Mitchell et al.'s claim, that their propositional theory is a single-process theory, is illusory because they relegate some learning to a secondary memory process. This renders the single-process theory untestable. The propositional account is not a process theory of learning, but rather, a heuristic that has led to interesting research.

I am now sitting in La Antigua, Guatemala. It's 6:00 a.m. Ancient church bells compete with their clanging. Some with a clear ringing, others of dead metal. For centuries this tiny town of some 20 square blocks was the very center of Christianity in the "new" world. Its philosophy was brought to this place, lock, stock, and barrel. And, from here it was funneled south to Peru and north to Mexico. Not a philosophy of "liberation." Just ask the Maya who (...) remain. (shrink)

At the present stage, the problem of human ecology is determined, for all practical purposes, by the response of man to the conditions of the environment he has himself modified and created.