Explore the intricacies of large-scale quantum error-correction simulations in this insightful 21-minute conference talk delivered by Maxime Tremblay, a Researcher at Nord Quantique, during QHack 2023. Gain valuable knowledge about the techniques and challenges involved in simulating quantum error correction on a large scale, and discover how these simulations contribute to the advancement of quantum computing technology. Delve into the art and craft behind these complex simulations, understanding their importance in developing robust quantum systems and improving error mitigation strategies.