Damascus steel. http://en.wikipedia.org/wiki/Damascus_steel http://en.wikipedia.org/wiki/Damascus_steel I'm sure there's tons of tools that are extinct and no

Damascus steel. http://en.wikipedia.org/wiki/Damascus_steel http://en.wikipedia.org/wiki/Damascus_steel I'm sure there's tons of tools that are extinct and no surviving record of them exists, so we don't know about them. In that sense, you could say it's all a matter of documentation. If something doesn't exist at a given moment but is documented, it's likely that it will be made again at some point.