Hari Dhillon and Amanda Burton read Jonah Lehrer's exploration of neuroscience and how the human brain makes up its mind. The importance of the emotional brain. Since Plato, philosophers have described the decision-making process as either rational or emotional: we carefully deliberate or we go with our gut instinct. But as scientists break open the mind's black box with the latest tools of neuroscience, they are discovering that this is not an accurate picture of how the mind works. Our best decisions are a finely-tuned blend of both feeling and reason, and the precise mix depends on the situation.