I think the Wikipedia article answers that question: “carved wood as a supplemental, and perhaps sturdier, base to which the color-coded cords could be attached.[6] A relatively small number have survived.”

they’re fragile and don’t last. i imagine the act of reading them probably wears them down quickly if they’re read often. you read them through abrasion. books are fragile too, but it’s possible to handle them carefully and still read them. can these be read by sight? I’m actually not sure now that i think about it.

this likely created survivorship bias. even in the cultures that we know to have used them surviving examples are uncommon. there could easily have been other cultures doing this or something similar, but we wouldn’t know before none survived the test of time.

edit: read further and there’s also this “and most quipu were identified as idolatrous and destroyed,” -destroyed by the spaniards.

classic.

man i gotta finish reading first.

“Various cultures have used knotted strings unrelated to South American quipu to record information — these include Chinese knotting, and practice by Tibetans, Japanese, and Polynesians.[10][11][12][13][14]”

i bet we could get a better answer by looking at the cultures that did this but weren’t fucked over by colonizers. Japan seems a good place to start. one of the few countries that looked colonizers in the face, saw through their bullshit, then had the strength of arm to tell them to fuck all the way off.

Because sometimes you want to describe and record the beauty of a potato without being limited by the language! How can one describe the terrace farms with just knot knot knot knot knot knot knot

That’s the problem—how do you restrict literacy to an elite scribal class when everybody has string?

Because I’m a westerner, so Tallysticks were the go to!

…which is why everyone should go learn MMT (a set of economic ideas/statements based on the historical usages of money).