The Inca never developed a system of writing, but they kept records and told stories through intricate knotwork. Learn what researchers know -- and what they're still looking to find out -- about Inca khipu in this classic episode of BrainStuff, based on this article: https://people.howstuffworks.com/culture-traditions/cultural-traditions/unraveling-khipu-inca-knot-language.htm

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Episode: https://omny.fm/shows/brainstuff/brainstuff-classics-how-did-the-inca-knot-language

Podcast: https://www.iheart.com/podcast/brainstuff-20922291/