Liminality is the fancy anthropological / ethnography / jungian version of the concept I’ve been dancing around not seeing just out of sight in the corner somewhere. A few people have said it through the years and it didn’t click but now it did. Limen (barely perceptible difference) comes from the latin limen which is a doorway.
Truth is a location for humans. It depends on demarked boundaries. , Thresholds. Doorways. Mixing zones. Interfaces. Hallways between rooms (truth is a room with walls and doors). Truth has a membrane. More liminal / limen