Read the article "Doing Fieldwork among the Yanomamo" by Napoleon Chagnon and answer the following questions within your summary.

Chagnon experienced a lot of culture shock when he first went to live with the Yanomamo. Discuss $4$ major issues he had to deal with? What was he primarily researching among these people? He had a challenge in completing this research. What was it and how did he deal with the issue?