Paul Griffiths is a freelance evangelist. He is the author of four books and is involved in the running of various evangelism training and evangelistic courses across the UK. He lectures on various MA, Bth and Bible College courses. Martin Robinson leads Together in Mission, a training agency, and is author of many books, most recent The 8 Secrets of Happiness.
Karola Stotz is an Australian Research Fellow at the University of Sydney in the project 'Postgenomic Perspectives on Human Nature'. She is the editor of Genes, Genomes and Genetic Elements (2004), Reconciling Nature and Nurture in the Study of Behavior and Cognition Research (with C. Allen, 2008) and Philosophy in the Trenches: From Naturalized Philosophy to Experimental Philosophy (of Science) (2009).