Isn't It a Good Idea to Extrapolate?

CNN's John Sutter talks with neuroscientist David Hawkins about his new book, "How the Mind Works" He says some of what Hawkins proposes is settled science based on observational research and MRI scans. But he argues that we don't have a settled understanding of how the brain works - especially when it comes to generating thought. In one square millimeter of neocortex, there are roughly 100,000 neurons, 500 million connections between neurons called synapses,. Axons and dendrites are sort of the communication vehicles of the mind.