He found the door on the second cycle after leaving the high-density region.
The Middle Domain's landscape between the threshold boundary and the door's location was territory he had covered before, the formations and their self-luminous quality familiar in the way of ground that had been walked twice, the second walking carrying the accumulated context of everything between the first walking and the return.
The door was the same.
Law-matter composition, rectangular, standing alone in the sparse zone the proving ground had cleared around itself for the same reason significant things cleared space around themselves in this realm, the organizing principle of the structure requiring room to operate in rather than compression from neighboring content.
He stopped in front of it.
He thought about what the measurement would tell him and what it would not tell him.
