In the nature vs. nurture debate, researchers have declared nurture the winner. People who excel are the ones who work the hardest; it takes ten+ years of deliberate practice to become an expert. Deliberate practice is not about putting in hours, it’s about working to improve performance. It does not mean doing what you are good at; it means challenging yourself under the guidance of a teacher. Unfortunately, our organizations are not set up to develop experts, nor do agile practices encourage them. So how will we develop the experts we need to improve?