When it comes to free will, we think of our ability to independently make decisions based on our own desires or interests. That being said, there are those who say that we are the mere conscious witnesses of decisions that, deep in our brains, have already been made. Our guest argues that we are not mere vessels responding to physical forces, but agents acting with purpose. Kevin J. Mitchell is Associate Professor of Genetics and Neuroscience at Trinity College Dublin and author of ‘Free Agents – How Evolution Gave Us Free Will’.