Originally Posted by Cicero
Thanks for the explication. No this was the only example that he gave as the issue was tangential to the main discussion.
I think there is a good example for this discussion within Japanese history. The crossbow, especially the Oyumi were advanced technologies that were "abandoned" by the Japanese. In the Ninth century the Oyumi (which are basically huge crossbows) were used in several military engagements throughout Japan. In the 10th century it was even called a "god" among other weapons. However the weapons quickly fell out of favor and there is hardly any physical evidence of their existence today.
It's still debatable why exactly crossbows were abandoned. However, there are countless documents from the period complaining of the complexity of the larger Oyumi and the lack of suitable teachers. Also, even the smaller crossbows were seen as somewhat cumbersome on the battlefield.