6. What is the main idea of the text?
7. Why having more money is better according to economists' conclusions?
8. What is the work of Daniel Gilbert?
9. What kind of people participated in the survey?
10. According to the text, what are the living conditions of Masai of Kenya?

6. Without a specific text provided, I cannot determine the main idea.

7. Without the economists' conclusions being mentioned, I cannot provide an answer.

8. Without information about Daniel Gilbert's specific work being mentioned, I cannot provide an answer.

9. Without information about the participants of the survey being mentioned, I cannot provide an answer.

10. Without the text providing information about the living conditions of the Masai of Kenya, I cannot provide an answer.