I do know of a single instance in which a technology was lost by a culture. The question of whether it could be considered to be within the same civilization owner is rather moot.
In their spread across the Pacific, the Polynesians knew about pottery when they reached Samoa. When the reached Tonga, the next major centre, they had lost that knowledge. The apparent reason is that the small islands had no suitable clay. When they later colonized Rarotonga, Hawaii, Easter Island and New Zealand, all of which have suitable clay, the knowledge had been forgotten.
However, in this case, sections of a similar culture had no substantive contact for centuries - I cannot consider them the same technology owners.
Cheers.
[This message has been edited by Gary Thomas (edited April 20, 2001).]
In their spread across the Pacific, the Polynesians knew about pottery when they reached Samoa. When the reached Tonga, the next major centre, they had lost that knowledge. The apparent reason is that the small islands had no suitable clay. When they later colonized Rarotonga, Hawaii, Easter Island and New Zealand, all of which have suitable clay, the knowledge had been forgotten.
However, in this case, sections of a similar culture had no substantive contact for centuries - I cannot consider them the same technology owners.
Cheers.
[This message has been edited by Gary Thomas (edited April 20, 2001).]
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