What is the purpose of the ancient carved balls?

The reading and the listening are both about the purpose of the carved stone balls. The author of the article presents three theories to describe their potential use. However, the lecturer contradicts these theories. In his opinion, they are fallacious. First of all, according to the reading, balls would have been used as a weapon to hunt or to fight. Also, the passage mentions that the balls with attached cord would have been used to swing or throw in a fight. However, the speaker challenges this specific claim. She claims that there were no wear marks on the ball. Further, she points out that if the balls were used for hunting or fighting, they would have been a little bit broken, but most were intact. Secondly, the writer suggests that stones were uniform in size and used to measure weight. The speaker, however, asserts that the balls had uniform sizes but were made from different types of stones. Furthermore, she elaborates on this by saying that the raw materials of balls had different densities, so the balls had different weights and could not have been used for measuring weight. Finally, the author posits that the balls would have been used to represent social status in the community because they had complex designs. In contrast, the lecturer's stance is that some balls were carved with an intricate design, but some had only a simple design. Moreover, she puts forth the idea that these balls were not found in tombs or coffins, and if they had any social purpose, they would have been found there.