It could also be pictorial in nature, including photographs of important information, or diagrams of critical processes.
A knowledge ark would have to be resistant to the effects of natural or man-made disasters in order to be viable.
Such an ark should include, but would not be limited to, information or material relevant to the survival and prosperity of human civilization.
[3] The Memory of Mankind project involves engraving human knowledge on clay tablets and storing it in a salt mine.
[5] A Lunar ark has been proposed which would store and transmit valuable information to receiver stations on Earth.