Recorded 04 February 2025. Cody Jones of Google Quantum AI presents "QEC below the surface code threshold I of II" at IPAM's Winter School on Quantum Error Suppression, Mediation, and Correction. Learn more online at: https://www.ipam.ucla.edu/programs/special-events-and-conferences/winter-school-quantum-error-suppression-mediation-and-correction/