PC: National Endowment for the Humanities

Before smartphones, spreadsheets or even the written alphabet as we know them, the Inca managed information in a way that still seems surprisingly advanced. Their system, known as Quipu, used knotted cords and color-coded wires to store records across a vast empire. For a long time it was believed that it was primarily numerical. Most recently, the research was accepted in February 2026, although it makes some broad suggestions. Some scientists reportedly view the quipu not simply as a counting device, but as a structured way of organizing and processing information. Almost like a primitive computing system. That idea has generated debate, curiosity, and even a little skepticism. Still, the possibility alone is interesting. Civilization without written script. Yet managing complex administrative data across different sectors.

What is the structure behind Quipu knots and Inca records?

For years, scholars such as Marcia Asher and Robert Asher argued that the Quipu knots likely represented a decimal-based numerical system. Each knot, each position, holds meaning in a structured way. Other researchers, including Sabine Hyland, have suggested that quipus may also encode linguistic elements. Symbols that can represent sounds or concepts. About 95 potential markers have been proposed in some studies. These characteristics appear to have meaning beyond simple counting. The structure seems layered, almost modular. This is not unlike how modern systems organize data into categories and subcategories.Single nodes alone do not explain the whole picture. It seems that the system depends on the relationships between the elements. That complexity is where things start to look less like ledgers and more like information structures.

what does a quipu look like tree-like data structures used in computer science

A different perspective came from computer scientist Richard Doselman, who looked at quipu through the lens of data structures. With colleagues Edward Doolittle and Vatika Tayal, he reportedly saw the system not as something to decode, but to model. His idea was simple in concept. Quipu cords branch from a main cord. That hierarchy mirrors the tree-like data systems used in computing today. Researchers translated these properties into programming logic using languages ​​such as C++ and Python. He also created a file format designed based on Quipu principles.

Quipu-Based Prototypes and How They Work in Simple Words

The team reportedly created working prototypes based on Quipu logic. A spreadsheet model. Even an image representation tool. These were not historical reproductions, but rather modern applications inspired by the structure. Hierarchies allow data to be added without reorganizing everything. Organization also scales in a linear manner, making it suitable for layered datasets such as census records or inventories.

Hidden layers of meaning and possible encryption

One of the more unusual aspects of the quipu is how flexible its structure appears to be. According to the researchers, scrambling the arrangement of cords at different levels could act as a form of data security. Encryption is not added on top, but is built-in within the structure itself. This is quite different from modern systems, where encryption is usually implemented separately. Here, mechanisms to obfuscate it are already in place in the organization of the data.The Incas were probably not designing cryptographic systems. Yet the qualities of his method seem to permit it.

Why is the Quipu considered an early information system rather than a true computer?

It may seem a bit strange to call a quipu a “computer”. No electricity, no processor, no binary code in the modern sense. Still, the comparison is not entirely unfair. What the Inca developed was a structured, scalable, and adaptable method of information storage and management. One that supported hierarchy, grouping and summarization. Features that lie at the core of many computing systems today.Experts say it may be more accurate to view the quipu as an early information technology rather than a literal computer. A system designed for organization rather than mere calculation.