David Sanford

Although Aranyosi's claim that McTaggart's "set of parts" is a set rather than a fusion is correct, his attempt to restate McTaggart's conception needs revision. Aranyosi argues that "the fusion of cats is identical with the fusion of all cat-parts, 'regardless of whether all cat-parts are parts of cats or not.'" Fusions have unique decompositions into what David Lewis calls "nice parts." Cats are nice parts of cat fusions, as are maximal spatio-temporally connected parts. Part of Aranyosi's argument fails when it deals with cats; part of it fails when it deals with maximal spatio-temporally connected parts. He does not identify one kind of nice part that allows his whole argument to go through.

Two fusions can be in the same place at the same time. So long as a house made of Tinkertoys is intact, the fusion of all its Tinkertoys parts coincides with the fusion of it walls and its roof. If none of the Tinkertoys is destroyed, their fusion persists through the complete disassembly of the house. (So the house is not a fusion of its Tinkertoy parts.) The fusion of the walls and roof does not persist through the complete disassembly because the walls and the roof themselves do not persist. (So the walls and the roof are also not fusions of their Tinkertoy parts.)

Suppose that Susan did not go to the movies. The reconciling project attempts to show that this plus Determinism does not imply that Susan could not have gone to the movies. The estranging project attempts to show the opposite. A counter‐entailment argument is of the form A is consistent with C, and C entails not‐B, therefore A does not entail B. An instance of the counter‐entailment arguments undermines a central argument for the reconciling project. Another instance undermines a central argument for the estranging project. This is one symmetry. In each case, the natural response to the counter‐entailment argument begs the question. This is another symmetry.

Roderick Chisholm provides, in different places, two formulations of Brentano's thesis about the relation between the psychological and the intentional: (1) all and only psychological sentences are intentional; (2) no psychological intentional sentence is equivalent to a nonintentional sentence. Chisholm also presents several definitions of intentionality. Some of these allow that a sentence is intentional while its negation is nonintentional, which ruins the prospects of defending the more plausible and interesting thesis (2). A generalization of the notion of logical independence to any number of mutually independent sentences permits a revision of Chisholm's criteria of intentionality that ensures that a sentence is intentional on a criterion exactly when its negation is as well.

This article answers John Biro's "Knowability, Believability, and Begging the Question: a Reply to Sanford" in "Metaphilosophy" 15 (1984). Biro and I agree that of two argument instances with the same form and content, one but not the other can beg the question, depending on other factors. These factors include actual beliefs, or so I maintain (against Biro) with the help of some analysed examples. Brief selections from Archbishop Whatley and J S Mill suggest that they also regard reference to actual beliefs as essential to explaining begging the question.

According to John A Barker, whether an argument begs the question is purely a matter of logical form. According to me, it is also a matter of epistemic conditions; some arguments which beg the question in some contexts need not beg the question in every context. I point out difficulties in Barker's treatment and defend my own views against some of his criticisms. In the concluding section, "Alleged difficulties with disjunctive syllogism," I defend the validity of disjunctive syllogism against the views of Alan Ross Anderson and Nuel D Belnap, Jr., ask pointed questions about the notion of intensional disjunction, and suggest how my treatment of begging the question can be extended to deal with the so-called paradoxes of strict implication