When we over-index on documenting our lives, or infuse it with the aesthetic of cinema, scoring the climaxes, editing out the in-betweens that make up a life, we risk inverting its utility. Instead of being an existential hedge against dying, it becomes one against living. We end up believing things about our former selves that weren’t quite true, or doing it for the gram, or missing a hike before it’s even over. In our search for meaning we obscure it.
Beyond the anthropological understanding of liminality, it's gotten an interesting focus in the architecture discipline. Architects, often phenomenologists, focus on Turner's "betwixt and between" spaces: designed spaces that are boundaries. The most common liminal spaces focused on are the designs of vestibules, stairs, entryways, circulation, porches/balconies, and material transparency. I think the designing of liminal spaces is so common due to the lack of rigidity to its function. People sit on stairs and sing from balconies. The openness of function allows for spontaneity