Part 1 | Part 2 In his talk at the Festival of Dangerous Ideas, philosopher and bioethicist Julian Savulescu examines the nature of human beings as products of evolution, in particular their limited altruism, limited co-operative instincts and limited ability to take account of the future consequences of actions. He argues that humans' biology and psychology are unfit for the kind of society we live in and we must either alter our political institutions, severely restrain our technology or change our nature. Or face annihilation by our own design.He is Uehiro Professor of Practical Ethics at the University of Oxford, Head of the Melbourne–Oxford Stem Cell Collaboration, and a former editor of the prestigious Journal of Medical Ethics.Festival of Dangerous Ideas, Sydney Opera House, October 2009 Less