Professor Bill Martin from Düsseldorf University is a leading evolutionary biologist, who has made fundamental contributions to our understanding of the origins of eukaryotes, the cell nucleus, and life itself. In this episode, Bill reveals how he chooses a research question and boosts his creativity. He also discusses the pitfalls of exploratory data analysis and the perils of working in highly crowded fields. And he challenges us: whenever a visitor gives a talk at your institute – think of the most interesting question. You owe it to the visitor, and it’ll give you ideas.   For more information on Night Science, visit www.night-science.org .