Part 2: In his follow-up lecture, David Vernon dives deeper into the role of memory, especially in a system. Memory, as he states, is a process rather than a state. He presents different types of memory, explores the role of memory, explains the concept of self-projection, prospection, and internal simulation, and clarifies technical terminology from cognitive science and psychology as well as from robotic literature. He concludes with internal simulation combined with action, and with the concept of forgetting which is important but still not fully understood in neuroscience. His exceedingly interesting talk is suitable for beginners.