Some guests make me think harder than others. This guest had me holding on by my academic tippy-toes. *Associate Professor Kevin Mitchell is an Irish neurogeneticist, neuroscientist, author and researcher at Trinity College Dublin, where he works in the Department of Genetics and the Trinity College Institute of Neuroscience. His work spans genetics, neuroscience, psychology and philosophy, with a particular interest in consciousness, human agency, decision-making and the relationship between the brain and mind.