Mathematical Precision Inca Quipus and Knotted Records

We are improving the quality of life for people around the world through science, technology, and innovation. The document summarizes the development of science in several ancient civilizations including Mesoamerica, Asia, Africa, and the Scientific Revolution. Though the Inca could not compete with the Maya in science, their technology was ahead of every other American society and allowed them to achieve the same high ... • F5.4: Science and Technology in Local Challenges, including science and engineering work ... European engineers did not build this type of bridge for another ... Inca Technology · Mita System: Mandatory public service where people worked for the government for a set time each year. · Roadways: 25,000 miles ... Pachacuti is believed to have been the first Inca emperor to order forced resettlement to squash the possibility of an uprising from one ethnic ... The first few rains in Q'ente Killay made him aware that the time had come to build. Before starting, Quispe did what is done in the Andes when ... A new study used ancient DNA to find out for the first time where workers buried at Machu Picchu more than 500 years ago came from within the lost Inca Empire. They featured giant staircases and suspension bridges that wheeled vehicles would not have been able to traverse. Instead, the Incas used a ... Thus, they initiated the cultivation of what is now the world's third most important food crop. The fertile soil of the Sacred Valley has in the ...