How does the quotation, "They had to look beyond the individual" fit into the idea of outliers generally and the Rosetans specifically?

In context, to look beyond the individual it is necessary to understand their culture, their friends and family, and where the Rosetans came from. Gladwell didn't focus on individuals, but rather, the community as a whole... the fact that the way we live and the people who surround of have an indisputable effect on who we are. The Rosetans are active, social people. They are congenial and genuinely care for their neighbors. They are religious, they have a deep respect for their elders, who are embraced for their knowledge and experience. Peaceful living, sharing, and looking out for each other is conducive to happiness.... happiness, in turn, is a key yo healthiness and longevity.