RT Journal Article T1 Lagrangian possibilities A1 Ruyant, Quentin Joel Marie A1 Guay, Alexandre AB Natural modalities are often analysed from an abstract point of view where they are associated with putative laws of nature. However, the way possibilities are represented in physics is more complex. Lagrangian mechanics, for instance, involves two different layers of modalities: kinematical and dynamical possibilities. This paper examines the status of these two layers, both in the classical and quantum case. The quantum case is particularly problematic: we identify four possible interpretive options. The upshot is that a close inspection of the way possibilities are represented in physics could lead to new ways of thinking about natural modalities. PB Springer SN 0039-7857 YR 2024 FD 2024-04-12 LK https://hdl.handle.net/20.500.14352/103132 UL https://hdl.handle.net/20.500.14352/103132 LA eng NO Ruyant, Q., Guay, A. Lagrangian possibilities. Synthese 203, 125 (2024). https://doi.org/10.1007/s11229-024-04550-x NO FinanciaciĆ³n en Acceso Abierto gracias al convenio CRUE-CSIC con Springer Nature. NO ComisiĆ³n Europea DS Docta Complutense RD 10 abr 2025