Final answer:
The claim that the Yanomamo are evidence that cultures never change is false; cultures are dynamic and change over time due to various factors including interaction with other cultures.
Step-by-step explanation:
The statement that the Yanomamo are proof that cultures never change is false. Anthropologists like Franz Boas have argued against the idea of unilineal cultural evolution, suggesting that each culture evolves according to its own history and in constant interaction with others. Cultures are dynamic, and they change through processes including trade, migration, conquest, and the diffusion of ideas and practices. Human beings have developed flexible biological and social features that contribute to cultural diversity, and having a culture means that knowledge and behaviors are transmitted across generations, which inherently implies change and adaptation.