Explore the fundamentals of Joint Cognitive Systems in this thought-provoking workshop from RubyConf 2021, led by Laura Maguire and John Allspaw. Delve into the origins of Resilience Engineering and Cognitive Systems Engineering, focusing on human-machine teaming principles based on shared cognitive efforts. Through a combination of lectures, discussions, and hands-on exercises, gain a new perspective on working with highly automated systems. Examine core concepts, historical examples like Three Mile Island, and practical applications in software engineering and user interface design. Learn about cognitive work, team dynamics, and the importance of coordination in joint activities. Discover how to apply these principles to improve your work with complex systems and address challenges in modern software development environments.