On this Don’t Shout at the Telly young volunteers grapple with sustainable development. Is it the best way forward or the enemy of progress? Should we replace material development with living simpler, more ‘sustainable’ lives? Austin Williams, director of the Future Cities Project and author of The Enemies of Progress leads this on the sofa discussion and argues that sustainable development is parochial, patronising and a waste of human potential. But what do you think?