Today’s computers are composing music that sounds more Bach than Bach, turning photographs into paintings in the style of Van Gogh’s Starry Night and even writing screenplays. But are computers truly creative, or are they merely tools to be used by musicians, painters and writers to improve their art? Arthur I. Miller and Murray Shanahan take us on a tour of creativity and ask what it means to have original thought and consciousness in the age of machines. Chaired by Julia Wheeler.