Ogi Ogas and Sai Gaddam, neuroscientists and authors of Journey of the Mind: How Thinking Emerged from Chaos, discuss why consciousness exists, how consciousness works, and their unified theory of the mind. Ogas and Gaddam's latest book, Journey of the Mind, is available for purchase now. Ogi Ogas and Sai Gaddam both received their PhDs in computational neuroscience from Boston University, where they designed mathematical models of cognition.