It is a technology that links people worldwide in terms of making it a universal currency. I don't really consider it a method of making quick money because in reality it is not so easy to gain from it as evidenced by how many lost their investments so easily. We need more skills in dealing with it or we will fail in the end.I believe that in the future, the world will no longer need cash, and it will be settled with all identities or figures, so we cannot miss it its impossible.