Is this about that? I always thought it was more an exercise in pointing out that other life in the universe may not be recognizable as such. It's hard to imagi

Is this about that? I always thought it was more an exercise in pointing out that other life in the universe may not be recognizable as such. It's hard to imagine such a thing directly, but the story gets us to the border of it by flipping the tables and presenting Earth Life as unbelievable to an undefined alien POV.