Make distance answer to survival.
Karst keeps movement legible enough for food, trade, reinforcements, and retreat to remain human decisions rather than gifts surrendered to an enemy.
Karst translates an older instinct into routes, caravan flow, supply, timing, and aristocratic calculation. Its current work is practical; the deadlier geometry beneath it remains only a residue.
A road is already a decision before the army reaches it.
Karst keeps movement legible enough for food, trade, reinforcements, and retreat to remain human decisions rather than gifts surrendered to an enemy.