I don’t know if this is the same or at least similar, but I’ve always been fascinated by the idea of a generation starship that is moving toward the universe either toward another planet, in search of another planet, or simply as an indefinitely mobile home. It’s wild to imagine generations being born and living on the starship without having any real understanding of the place that humans came from. Stories of Earth would start to seem like wild folklore and mythology rather than actual human history.

Eventually, some generations may become angry that the decision to live on this starship was made by other people many generations before them, and now everyone on the starship is cursed to live under that decision. Was the starship navigation designed so that people may one day change the course? Or perhaps enormous safeguards were put into place to ensure that the ship kept going toward the initial objective because all other options were decidedly much much worse for everyone.