Thomas Hills suffered from a minor head injury as a child that led to a mild case of retrograde amnesia.  He's pretty sure he never actually woke up from that.  This returned when he took mefloquine while in Ghana, with its fantastical and often violently lucid dreams. While a PhD student in biology studying how worms search, he continued his psychonautic explorations, looking for the trapdoor in his mind. He floated from Texas to Indiana to Switzerland to the UK. He eventually wound up as a Professor of Psychology, studying mental search and still waiting to wake up.