No brainer, god had to create somebody absolutely ignorant about how he or she got here. It would behove everybody already present to become invisible to maintain the mystery. This new somebody would receive skills and abilities sufficient to pose ultimate questions, and to invent answers to them. They were to be guided by various natural clues and signposts, wandering know-it-alls, and ambiguous events anonymously reported. The new somebodies would arrive naked in the world, and cobble together reasons and whys from the smorgasbord laid before them, with an occasional poke with a stick to keep them moving.