6. The child's map may be compared to an early mariner's map of the world.It shows that the world's unknown regions contain the fabulous -- Eldorado,Atlantis, anthropophagi, dragons, the world's edge. If such things were notmapped, mariners could not sail between trading ports. The human mind mustknow the unknown as the context of the known. It makes a topography ofnothingness, it is a condition of its sanity.