Very nice! Also I just stumbled upon this article about Khipus that have been recently uncovered: http://anthropology.net/2016/01/03/between-the-knots-untying

Very nice! Also I just stumbled upon this article about Khipus that have been recently uncovered: http://anthropology.net/2016/01/03/between-the-knots-untying-the-mystery-of-incan-khipus/ http://anthropology.net/2016/01/03/between-the-knots-untying...