Accumulated knowledge would have made it possible for successive generations to develop such specialties as metallurgy, agronomy, rearing sheep and cattle, writing, and the fine arts.
बेशक इन औज़ारों को निर्माण काम, बढ़ईगिरी, सिलाई और खेती के काम में इस्तेमाल किया जाता था ।