Two passages. Left and right. They are identical in every measurable respect: same width, same height, same temperature, same darkness, same faint smell of old paper and cold stone. I have entered both. I can report the following:
───── JUNCTION ───── LEFT ──► [measured: 40m] ──► dead end? (or beginning) RIGHT ──► [measured: 40m] ──► this junction
The right passage, after approximately forty metres, returns to this junction. I measured the distance. I checked the orientation. There should not be a loop. The geometry does not permit a loop. There is a loop.
"I have been trying to decide what this means. My current best hypothesis: the basement does not have fixed geometry. It is arranged — and I want to use this word carefully — it is arranged around the person inside it. You get what you need. I do not know yet what I need. The left passage has a dead end. I think. I felt something when I reached the end. Not a wall. Something else. I turned around. I am going back." — C. Jiang
// Coin flip result: heads (right). Right leads back here. Left is — something else.
// Time elapsed so far: I cannot verify. Phone has no signal. Watch shows 14:32. I entered at approximately 14:30. This seems consistent. I do not trust it.
the right passage loops because the corridor is testing her. every person who descends here faces this junction. every one of them eventually goes left. the ones who chose right thirty times before going left are still here.