How do you know when evidence is unfinished?

Menna saw the change. “Do not become interesting to yourself.” Nekhar turned. The old astronomer had already returned to his table. “What does that mean?” “It means men encounter an old wall and immediately assume the wall has been waiting for them.” Nekhar smiled. Menna did not. He pointed at the sky chart. The circular room, he explained, was part of a much older timing practice preserved in fragments. Certain stellar alignments, breath counts and bodily postures appeared in notes copied across centuries. Priests called them ascent rites. physicians called them dangerous breath retention. astronomers called most of it contamination of observation by ritual. “What do you call it?” Menna looked at him. “Unfinished evidence.”