I am never aware of my surroundings. I almost died in Paris twice in one day, for example, but I've never been robbed or pickpocketed or anything similar. Have I been lucky or am I travelling with my guardian angel? I talk to everyone! I'm the same here. I smile at everyone and say hello. I leave my suitcase on the platform and go get a coffee and it's always there when I return. Maybe the tables will be turned next trip?