Explore the coordination of degrees of freedom in joint action learning through this 15-minute video lecture by Rob Gray. Delve into the intricacies of interpersonal coordination and the learning process of joint tasks, such as carrying a piano together. Examine the application of Bernstein's freezing and freeing degrees of freedom concept across joint action systems. Review the hypothesis, analysis, and results of a study on this topic, including freezing ratios and joint-to-joint relationships. Gain insights into how task constraints and practice influence the learning of coordinated movements between individuals working towards a common goal.