[News] IVC Talk: Jose Alejandro Fernandez Cuesta (Complutense University of Madrid) on "Quantum Propositions and Logical Monism", November 13, 4.45 pm

Dear all, our next speaker in the Philosophy of Science Colloquium organized by the Institute Vienna Circle is Jose Alejandro Fernandez Cuesta (Complutense University of Madrid), who will give a talk on November 13, 4.45-6.15 pm. All are welcome! ---------------------------------------------------------------------------------------- *Philosophy of Science Colloquium TALK: Jose Alejandro Fernandez Cuesta (Complutense University of Madrid)* Quantum Propositions and Logical Monism Philosophy of Science Colloquium The Institute Vienna Circle holds a Philosophy of Science Colloquium with talks by our present fellows. *Date:* 13/11/2025 *Time:*16h45 *Venue:*New Institute Building (NIG), Universitätsstraße 7, 1010 Wien, HS 2i *Abstract:* In this talk, I will briefly present the formalism of standard quantum logics (QLs) and examine /sui generis/ features that seem to set them apart from other non‑classical logics. I will focus on their being plausibly "discovered" and on their apparent lack of interpretative utility in the philosophy of physics. On the usual presentation, QLs are introduced via a set of experimental propositions ("physical qualities"), informally specified in natural language as a response to these peculiarities; this apparatus has been used to draw a tenuous link between the semantics of QLs and the interpretation of certain experimentally obtained yet conceptually problematic results in quantum mechanics. I argue that this apparatus is philosophically relevant only under a prior commitment to logical monism –indeed, logical monism holds iff the experimental‑propositions apparatus is in place– and I offer several critiques of both. Rejecting both the monist commitment and the apparatus allows a reassessment of the sui generis properties of QLs and their philosophical interpretation.