Where do you let your imagination take you? It's a different journey for each person, so to get at the question of what imagination is, you would need to talk a variety of people. This week is the annual Science and Literature Symposium at the University of Utah, and Friday, we're talking to the keynote speakers. Mathematician Barry Mazur, Poet Alice Fulton and Composer Fred Lerdahl will join us to explain the similarities and the differences of their creative processes.