Summary:
- The Inca civilization in South America used a complex system of knotted strings called "khipus" to record information and communicate. These khipus were made of colored cotton or camelid fibers and contained intricate patterns of knots and colors.
- Researchers are working to decipher the meaning behind these khipus, which may have been used to track census data, record historical events, and even convey complex mathematical and astronomical information.
- Understanding the khipu system could provide valuable insights into the Inca civilization and their advanced record-keeping practices, which were previously thought to be limited to an oral tradition.