Cost flow assumptions for inventory valuations were necessary when the specific identification method of assigning the actual cost of the goods sold was not possible or expensive. With the availability of extensive technology to track and maintain inventory (bar codes and scanners, RFID chips, etc.), it is now possible to track the actual cost of the goods sold on a cost-effective basis. Give at least two reasons why cost flow assumptions are still necessary for inventory costing purposes and your opinion on whether specific identification and weighted average costing (i.e., eliminating FIFO and LIFO) would be sufficient cost flow methods in the future.