A sailor and a doctor walk into a bar - no, it's not the beginning of a bad joke, it's actually the beginning of something quite beautiful. It was by sheer coincidence that I got to know my Zambian friend, Selemani.  He was looking for a table for his family in a crowded restaurant when I first saw him.  Noticing his struggle, I gestured to him to share our table and thankfully he accepted the offer.  Our personalities immediately clicked and I came to learn that he is a doctor who was raised...