DualGoose: anatomy of associative recall in fixed-state recurrences
Recurrent cells bundle several mechanisms at once, so comparing them end to end can't say which one costs recall. We toggle a short convolution, the transition structure, and decay one at a time at a fixed state budget. The convolution dominates, the rank-1 margin is conditional on its absence, and a retrieval wall that looks architectural turns out to be a training-coverage gap a distance curriculum removes.