Description from the pocket program: "Our Special Guest looks back on 50 rewarding years of being a SF fan, and 40 much less rewarding years of being a professor of English, and asks: what created SF? And what made it so different, and so fascinating? It's no good asking the professors. SF has produced a string of visions, shared and developed by a host of authors, but some of these are now running out of conviction (like NASA). What could give SF a boost? Are we looking at 'Day Million' or 'The Dying Earth'?"