I have a half-baked idea that some alien planet's marketing team is probably using pulsars as an advertising stunt. "Relax on Risa" and the like. I don't know how one would go about modulating a pulsar's output, but pulsars are seen everywhere.
This is complicated. Are we to assume that we aren't in a culture group unless we are born from a group's member or born in a specific location. If a culture resonates with an individual that doesn't fit into the "culture group" definition, can they never see the culture as their own? It definitely seems to bring into question what the definition of culture is and when is a culture added to the collective. Isn't that what sharing does?
Aren't there arguments about writers writing books and readers interpreting the story in their own way? The story is now everybody's, right? I do feel the danger in the idea, but it also feels sort of correct.