a stargate if you will. a domain selecting device, for those who wish to boldly go where no entity has gone before. a hall of mirrors, where regressive reflections repudiate reasonable responses...
The optical illusion called Rubin's vase after its inventor / discoverer the Danish psychologist Edgar Rubin involves higher-level cognitive pattern matching of great interest to the Gestalt psychologists, who invented/discovered many similar illusions themselves.
Gestalt thinking can help answer some of the biggest questions around, those relating to consciousness, personhood and the like.