[PhasmaFelis]

These knots are census records.

> Urton says he and other researchers in the field have always had a general sense of what the khipus represented. Many, they could tell, had to do with census data. Others appeared to be registers of goods or calendar systems.

They've known for a while that many kinds of data were recorded with khipus, but (it sounds like) they couldn't read anything but the raw numbers, which were meaningless without context. Medrano has basically discovered a Rosetta Stone, the same data in both a known and unknown language, and it could very well lead to cracking the full language of the khipus.

And don't underestimate census records alone. There's a lot of tremendously valuable information to researchers there.