Mapping like Openstreetmaps, and josm have helped so many peoples lives. Mapping is a great opportunity to do task like this is because your making your own hobby. This kind of experience that no one can understand because people taught that mapping is boring. Sharing my own experience before, during, and after. Before I thought mapping is boring, because Earth is a large map where it takes so many years before you finish mapping. But I thought that so, but there are so many mappers around the world. When I knew that we will use computers in mapping, that gives me interest on it. During mapping I realize mapping is exciting, adding information, making your own path/ways, adding houses, competing to other classmates, adding some features, editing mistakes from others, etc. Meanwhile I sense something, a thing that made me uncomfortable, a lack of doing mapping again. After mapping I feel more boring I've missed it already. I had so many mistakes that I can't count but I assured you that all of my mistakes is all of my learnings. You learn, if you fail. There is no person doesn't make mistakes, because nobodies perfect. It's a fun experience on mapping. Helping other mappers will made their task lesser and fewer. Joining in CWTS organization is great experience, because your participating to each other. A gratitude and honor for all I've done since I came up on this organization. Not by doing a task only but by having fun and experience. Experience is the best teacher of all things.