In this discussion, Rajesh Rao, a distinguished professor at the University of Washington, dives deep into the concept of predictive coding, revealing how our brains predict and adjust to sensory signals. He introduces his latest research on 'Active predictive coding,' expanding on how action and perception interplay in our cortical structures. The conversation also explores groundbreaking brain-computer interfaces, including BrainNet, which connects minds, and the ethical implications of augmenting human cognition through technology.