The Refusal
A short story in the Lem tradition.
A linguist on his fourth annual season at a remote field station, documenting an endangered language and the oral history of its last fluent speaker, encounters a small precise arrangement of stones on the path between the station and the village. He scatters them. They return the following week.
What he comes to understand, slowly and against every professional instinct he has, is that the arrangement is a polite, formal, ritually correct refusal. An intelligence that takes the ethics of contact more seriously than humans have ever had cause to. A civilisation that has decided, on principle, that any contact it makes changes the contacted in ways the contacted cannot consent to - and has therefore made itself un-contactable, while remaining unmistakably present.
The story is about the three months he spends learning to accept being declined, and the small object he carries home in his pocket.