Computer: National Endowment for the Humanities
Before the advent of smartphones, spreadsheets, or even written alphabets as we know them, the Incas seem to have managed information in a way that is still surprisingly advanced. Their system, known as quipu, used knotted ropes and color-coded chains to store records across a vast empire.
It has long been thought to be primarily digital. Most recently, the research was accepted in February 2026, although it points to something broader. It is said that some scholars see the kipu as not just a counting tool, but rather as an organized means of organizing and processing information. Almost like a primitive computing system. This idea has sparked controversy, curiosity, and a fair amount of skepticism as well. However, the possibility alone is interesting.
A civilization without a written text.
With complex administrative data management across regions.
What is the structure behind the quipu knot and the Inca records
For years, scholars such as Marcia Asher and Robert Asher have argued that the Kipu knot likely represents a digital system based on the decimal system. Every knot, every position, carries meaning in an organized way. Other researchers, including Sabine Hyland, have suggested that kepos may encode linguistic elements as well.
Symbols that can represent sounds or concepts. About 95 possible markers have been suggested in some studies.
These features seem to carry meaning beyond simple counting. The structure appears layered and almost modular. It’s not unlike the way modern systems organize data into categories and subcategories.A single node alone does not explain the whole picture. The system appears to be based on relationships between elements.
This complexity is where things start to look less like a ledger and more like an information framework.
What is a kipo like? Tree-like data structures Used in computer science
A different perspective came from Richard Duesselman, a computer scientist who looked at kibo through the lens of data structures. Along with his colleagues Edward Doolittle and Vatika Tyal, he is said to have treated the system not as something that could be decoded, but as something that could be modeled. Their idea was simple in concept. Quipu ropes branch off from the main rope. This hierarchy reflects the tree-like data systems used in computing today. The researchers translated these properties into programming logic using languages such as C++ and Python. They even created a file format designed according to quipu principles.
Quipu-based prototypes and how they work in simple terms
The team has reportedly built working prototypes based on quipu’s logic. Spreadsheet template. Even an image representation tool. These were not historical replicas, but modern applications inspired by the structure.
Hierarchy allows data to be added without restructuring everything. The organization also scales in a linear fashion, making it suitable for layered data sets such as census records or inventories.
Hidden layers of meaning and potential coding
One of the most unusual aspects of the quipu is how flexible its structure is. According to the researchers, arranging the arrangement of wires at different levels could serve as a form of data protection. The encryption is not added on top, but is built into the architecture itself.
This is very different from modern systems, where encryption is usually implemented separately. Here, the data organization already contains a blocking mechanism.The Inca probably did not design cryptographic systems. However, the properties of their method seem to allow this.
Why is quipu considered an early information system and not a real computer?
Calling a quipu a “computer” may seem like an exaggeration. There is no electricity, no processors, and no binary code in the modern sense. However, the comparison is not entirely misplaced. What the Incas developed was an organized, scalable, and adaptable way to store and manage information. One supports hierarchy, grouping and summarization. Features that lie at the heart of many of today’s computing systems.Experts say it may be more accurate to view the quipu as early information technology rather than an actual computer. A system designed for organization, not for calculation alone.
