Let us say you are seeking to go to a distant city. If you are alone and there are no proper directions, definitely you would wish for a map. It is not that you cannot do it yourself, but we do not know how long it will take. On an uncharted path, if you go without a map, you may take lifetimes to get there. If you go with a map, you will cross easily. If you go with a good bus driver, you will cross very easily; that is the difference. When you want to walk uncharted terrain, it is intelligent to choose a person who has already walked the terrain.