Human Machine Interfaces (HMI) are systems that facilitate interaction between humans and machines, often employed in industries like manufacturing, automotive, and aerospace. Coursera's HMI skill catalogue guides you in designing and understanding these interfaces that bridge the gap between complex machine operations and user-friendly interactions. You'll learn about various aspects of HMI such as interface design, user experience, principles of ergonomics, usability testing, and the role of artificial intelligence in HMI. With these skills, you'll be equipped to create effective, intuitive, and efficient interfaces that enhance human-machine collaborations.