There are many WI threads on technology being adopted where it was not. However history is full of instances where societies abandoned known technologies for inexplicable reasons. Jared Diamond's book offers a sample of the phenomenon. The bow and arrow were abandoned by several peoples from the Australian aborigines to Polynesians and some Inuits. Other Inuits abandoned the dog and sled. Bone tools were abandoned by the Australian aborigines, and some Pacific Islanders abandoned the canoe. Most Polynesians gave up pottery. The Mesoamericans gave up the wheel. Of course post-Rome Europeans abandoned many things, among which cement. The Chinese gave up the mechanical clock and water powered spinning wheels. The Japanese famously abandoned the musket.
What other technologies could be conceivably abandoned by specific cultures at specific times?
What other technologies could be conceivably abandoned by specific cultures at specific times?