John Mackay

Philippe Schlenker gives a method of deriving local contexts from an expression’s classical semantics. In this paper I show that this method, when applied to the traditional variably strict semantics for subjunctive conditionals of Robert Stalnaker, David Lewis, and Angelika Kratzer, delivers an empirically incorrect prediction. The prediction is that the antecedent of a conditional should have the whole domain of possible worlds as its local context and therefore should be allowed to have only necessary presuppositions. In the later part of the paper, I suggest the outlines of a solution to the problem. The solution involves adding a shifting contextual restriction on the domain of possible worlds.

In two‐dimensional semantics in the tradition of Davies and Humberstone, whether a singular term receives an epistemically shifted reading in the scope of a modal operator depends on whether the world considered as actual is shifted. This means that epistemically shifted readings should be available only in environments where an explicit contrast between the actual world and some counterfactual worlds cannot be made. In this paper, I argue that this is incorrect. Whether a singular term receives an epistemically shifted reading is independent of whether the world treated as actual is shifted. This, I argue, undermines the two‐dimensionalist account of epistemic shift. I then turn to the question how a positive view should handle these two phenomena separately. I argue for treating singular terms with a version of counterpart theory in which the difference between epistemically shifted and other readings is determined in the context of utterance.

Philippe Schlenker gives a method of deriving local contexts from an expression’s classical semantics. In this paper I show that this method, when applied to the traditional variably strict semantics for subjunctive conditionals of Robert Stalnaker, David Lewis, and Angelika Kratzer, delivers an empirically incorrect prediction. The prediction is that the antecedent of a conditional should have the whole domain of possible worlds as its local context and therefore should be allowed to have only necessary presuppositions. In the later part of the paper, I suggest the outlines of a solution to the problem. The solution involves adding a shifting contextual restriction on the domain of possible worlds.

A person of average height would assert a truth by the conditional ‘if I were seven feet tall, I would be taller than I am,’ in which an indicative clause ‘I am’ is embedded in a subjunctive conditional. By contrast, no one would assert a truth by ‘if I were seven feet tall, I would be taller than I would be’ or ‘if I am seven feet tall, I am taller than I am’. These examples exemplify the fact that whether a sentence's evaluation remains at the actual world in the scope of a modal or conditional depends on the combination of mood in the embedded and matrix clauses rather than, as is commonly thought, just on the presence of an operator ‘actually’. This essay argues that this phenomenon provides evidence that mood admits of bound and free readings along the lines of tenses and pronouns. It therefore favors the hypothesis that natural language contains variables and quantifiers for possible worlds in the object language. This, in turn, requires that the truth of a semantic value of a sentence (or whatever structure is embedded in a modal) be relativized to a sequence of worlds rather than to an individual world, and thus be distinguished from a proposition in the traditional sense. The essay also compares the framework defended with an alternative account of similar phenomena by Kai Wehmeier.

I argue that ‘actually’ does not have a reading according to which it is synonymous with the actuality operator of modal logic, and propose an alternative account of ‘actually’. The cases that have been thought to show that ‘actually’ is synonymous with the actuality operator are modal and counterfactual sentences in which an embedded clause's evaluation is held fixed at the world of the context. In these cases, though, this embedded clause's evaluation is not due to the presence of ‘actually’. As an alternative, I propose that ‘actually’ is a presupposition trigger along the lines of ‘even’ or ‘too’, and it signals that presupposed information states in the discourse are evolving in a non-standard way.