An important aspect of humane interfaces is meeting the needs of a variety ofpeople. They all have different skills, restrictions and whims. How do youfigure out what exactly those are? In this presentation I’ll talk about how I used user interviews and personasfor that purpose, using them as tools for discussions and implementation ofPublic Transportation in GNOME Maps. I'll talk about how I interviewed peoplefrom both cities and countryside, from both Brazil and Sweden, and how theirinsights challanged my own perceptions about what people need from a publictransportation UI.