Explore a 30-minute conference talk on "A Criterion for Strange Metallicity in the Lorenz Ratio" presented by Erez Berg from the Weizmann Institute. Delivered as part of the "Electron Correlations beyond the Quasiparticle Paradigm: Theory and Experiment" conference at the Kavli Institute for Theoretical Physics, this presentation delves into non-Fermi liquid behaviors and strange metallicity. Gain insights into the latest theoretical and experimental results challenging traditional views of quantum matter, focusing on electron transport beyond the quasiparticle framework, Planckian limits on scattering, and Cooper pairing without quasiparticles. Discover how the Lorenz ratio serves as a criterion for understanding strange metallic behavior in materials that defy conventional Fermi-liquid theory.