Explore a 29-minute conference talk on the crucial role of vertex corrections for the magnetic pseudogap, presented by Mengxing Ye from the University of Utah and KITP. Delve into advanced concepts in electron correlations beyond the quasiparticle paradigm, focusing on materials that don't conform to Fermi-liquid theory. Gain insights into the latest theoretical and experimental results shaping our understanding of quantum matter. Examine the application of textbook formulae versus more radical departures from the quasiparticle framework in explaining non-Fermi liquid observations. Investigate topics such as electron transport, the Planckian limit on scattering, Cooper pairing without quasiparticles, and collective modes in systems lacking well-defined quasiparticles. Learn about recent developments in quantum Monte Carlo simulations and other numerical methods, comparing them with analytical results from effective low-energy theories.