Speaker: Fausto Barbero (University of Helsinki)
Date and Time: Thursday, March 21st 2019, 16:30-18:00
Venue: ILLC Seminar Room F1.15, Science Park 107.
Title: Interventionist Counterfactuals in Team Semantics.
Abstract. Team semantics is a generalization of Tarskian semantics which allows the introduction of a greater variety of logical operators – most notably, atoms which express dependencies among variables. This extra degree of freedom is obtained by replacing the notion of satisfaction by an assignment with satisfaction by a set of assignments (“team”).
Passing from teams to multiteams (multisets of assignments), we will see a way of introducing probabilities in the framework. It will emerge that some distinctions made in causal modelling, e.g. between “do expressions” and “counterfactual expressions”, can be explained in terms of commutation of simpler logical operators. .