In False Wisdom, Gary H. Merrill develops criteria for distinguishing genuine from pseudo-philosophy, and then applies his criteria to several case studies, including Ayn Rand, all of whom he finds to be pseudo-philosophers. While offering a mostly helpful overview of better and worse ways of doing philosophy, Merrill fails to motivate adequately his way of distinguishing pseudo-philosophy from mere philosophical vices, errors, or failings. He is inconsistent in his characterization of the criteria for pseudo-philosophy and his application of those criteria, (...) harbors a narrow conception of what counts as philosophy, and displays a lack of interpretive charity toward several thinkers. (shrink)

_ Source: _Volume 55, Issue 4, pp 273 - 306 Jan Dullaert was a direct student of John Mair and a teacher of Gaspar Lax, Juan de Celaya, and Juan Luis Vives. His commentary on Aristotle’s _Peri Hermeneias_ addresses the foundations of propositional logic, including a detailed analysis of conditionals and the semantics of logical connectives. Dullaert’s propositional logic is limited to the immediate implications of the semantics of these connectives, i.e., their introduction and elimination rules. In the same context, (...) he discusses several alternative treatments of semantic paradoxes, paying most attention to the approaches derived from Martin Le Maistre and John Mair. (shrink)

_ Source: _Volume 56, Issue 3-4, pp 222 - 240 In medieval theories of consequence, we encounter several criteria of validity. One of these is known as the containment criterion: a consequence is valid when the consequent is contained or understood in the antecedent. The containment criterion was formulated most frequently in the thirteenth and fourteenth centuries, but it can be found in earlier writings as well. In _The Tradition of the Topics in the Middle Ages_, N.J. Green-Pedersen claimed that (...) this criterion originated with Boethius. In this article, the author shows that a notion of containment is indeed present in Boethius, but is not used to define or describe the relation between antecedent and consequent, i.e., the relation of consequence, as Green-Pedersen asserted. The author then offers two interpretations of the notion of containment that are present in Boethius – a metaphysical and a semantic interpretation – and shows how these relate to the containment criterion. (shrink)