When agriculture later peaked out in the '60s, agriculture policies continued to emphasize quantity. Based on domestic considerations, no attempt was made to increase the added value of agricultural produce. After the 1980s, "the crystal ball of most agricultural economists had gone dark."
但一九六○年代農業發展到頂點後，農業政策走的還是數量經濟，以內向型考量，不曾提高農產品的附加價值，一九八○年後，「農業經營者已不知農業的明天何在？」