I think those questions are great, but the answers will always lead to more questions. It is a journey in that regard which I suppose is logically driven. I think the best analogy is asking what is this table. It is made of wood and screws. What is wood made of…fibres. What are the fibre made of, carbon and other atoms. What was the atoms made of….etc. etc. Logic brings you closer to reality, but the closer you get, the more questions you will have which is one of the joys of life.