Doing science reminds Stuart Firestein of an old saying: “It’s very difficult to find a black cat in a dark room. Especially when there is no cat.” Before studying biology and becoming a professor at Columbia University in New York, Stuart worked for many years in the theater. In this episode, he talks about how he doesn’t miss the creativity or the spirit of the theater, as he finds all of that in science. For Stuart, ignorance and creativity are two horses pulling the same wagon of science, and lab meetings are center stage for both. To make progress, Stuart finds pluralism of enormous value – and crucial to pluralism is the ability to fail.