Over the course of the series, we’ve learned how tough it is to choose between older systems and newer innovation. Tougher still, is how those systems can make the people maintaining them feel: Frustrated, isolated, and stuck in the past while the world moves on. As we wrap up our discussion on the topic, we hear from technologists on how they reconcile the old with the new to advance their understanding of their discipline— and maybe further their careers in the process.