english: It takes a long time to learn how to do that, and they excavated the area and they found that this material culture, this way of doing it, these rocks, had passed down for at least 4,300 years through 225 chimpanzee generations.
non_english: Potrebno je mnogo vremena da se to nauči, a oni su istraživali ovu oblast i otkrili da je ova materijalna kultura, da je ovakvo ponašanje, ovo kamenje, prelazilo sa generacije na generaciju najmanje 4 300 godina kroz 225 generacija šimpanzi.