06/08/2026
Benbaji-Elhadad defends!
Last Friday, June 5, Ido Benbaji-Elhadad brilliantly and successfully defended his dissertation, entitled "Worlds, Times and the fate of Ontological Symmetry".
Here is the abstract:
"Thanks to a dedicated set of intensional operators—e.g., modals, attitude predicates, tense operators, and temporal adverbials—natural language is able to convey information about things beyond the concrete here and now; a feature famously termed displacement (Hockett 1960). In model-theoretic semantics, modal and temporal displacement are standardly cashed-out by treating declarative utterances as functions from worlds and times to truth values. Intensional operators like modals are then taken to quantify over possible worlds, while tense operators quantify over time intervals. Despite these operators’ distinct domains, a long-standing semantic assumption holds that worlds and times should receive parallel formal representations; namely, that the same grammatical machinery, whatever it may be, governs both world-dependence and time-dependence in natural language.
"Recently, Schmitt (2023) observed that worlds are special in that they do not seem to pluralize and partake in cumulative relations. In my thesis, I show that Schmitt’s claim is necessary to account for an earlier observation, that DPs cannot scope above a modal operator that in turn determines the evaluation domain of their restrictor. The reading that would be derived from this unavailable scopal configuration, I argue, can also be derived without it, as a cumulative reading with a plurality of worlds. Hence, without Schmitt’s ban on cumulative readings with worlds, a reading long thought to be unavailable is predicted to be attested for certain modal sentences.
"Building on observations by Szabo (2010,2011), I then show that the same reading that is unattested with modal operators is attested with temporal ones, and furthermore, that it is attested exactly because the way time intervals are introduced into the semantic derivation is not subject to a constraint similar to the one we must posit to prevent overgeneration in the modal case. I explore the implications of this disanalogy between worlds and times for the design of the semantic formalism and its representation of the world and time dependence of utterances."
Congratulations, Ido!!
Ido's website: https://idobenbaji.github.io/