• As long as the sum of all inflows exceeds the sum of all outflows, the level of the stock will rise. • As long as the sum of all outflows exceeds the sum of all inflows, the level of the stock will fall. • If the sum of all outflows equals the sum of all inflows, the stock level will not change; it will be held in dynamic equilibrium at whatever level it happened to be when the two sets of flows became equal.
