Week 2 Bonus - Answer

In place of a writing system, the Incas used an intricate system of colored knotted chords of rope call a quipu. The studies show that when the Spanish conquistadors figured out that was how they Inca's communicated, they went around to all the towns and untied and slashed all the ropes, effectivley cutting off all but verbal communication between towns. Not cool.

But it does remind me of a joke. Two strings walked into a bar and the bartender said, "Dude, we don't serve strings. Get out!" So they walked outside and unraveled themselves and tied themselves together and went back in. The bartender said, "Aren't you the same two strings I told to get out?" and they said, "no, we're a frayed knot!"