. >> most people who speak to christoph busch don't want to be on camera.e tell him episodes from their childhood or the entire story of their lives. they're happy to find someone willing to just listen. >> people don't normally spend a lot of time in a subway station , which means that when someone does come they're prepared to spend a bit of time. hello, yes, you're on the list. >> this woman made an appointment by phone. she wants to talk about her marriage to a man from senegal. christoph busch considers whether this could make an interesting story. >> at that point i migrated to senegal with my husband but we weren't really agreed on it. i said, let's do this. i have so many ideas, this is a poor country, they need good ideas here. but it didn't work, only nine months. >> then you came back? >> we came back, but it was a great experience. >> i'm always on the lookout for people i wouldn't normally get to meet, who wouldn't come to my house for a party, for example. or people who instill a sense of respect in me, where i'm a bit taken aback by what they