Interesting. Reminds of the Mayan Quipu system (http://en.wikipedia.org/wiki/Quipu http://en.wikipedia.org/wiki/Quipu) of storing information in knots in ropes.

Interesting. Reminds of the Mayan Quipu system (http://en.wikipedia.org/wiki/Quipu http://en.wikipedia.org/wiki/Quipu) of storing information in knots in ropes. I've read somewhere that they even had simple "computers" made out of stone structures that would then have these knot systems inserted into them, but for the life of me I can't remember what these were called. So the Mayans did it first! ;)