According to anthropologist Joël Bonnemaison, author of "The Tree and the Canoe: history and ethnography of Tanna," their resistance to change is due to their traditional worldview and how they "perceive, internalise, and account for the dual concepts of space and time."
Segundo o antropólogo Joël Bonnemaison, autor de "The Tree and the Canoe: history and ethnography of Tanna", a súa resistencia ao cambio débese á súa visión do mundo tradicional e a forma en que perciben, interiorizan, e dan conta dos conceptos duais de espazo e tempo."