Polynesia of the plant in the Cook Islands have been radiocarbon-dated to 1000, and current thinking is that it was brought to central Polynesia c. 700 and spread across Polynesia from there, possibly by Polynesians who had traveled to South America and back. Thor Heyerdahl proposed in the mid-20th century that the Polynesians had migrated from the northwest coast of Canada by large whale-hunting dugouts, and from South America on balsa-log boats. Many anthropologists have criticised Heyerdahl's theory, including Wade Davis in his book "The Wayfinders". Davis says that Heyerdahl "ignored the overwhelming body of linguistic, ethnographic, and ethnobotanical evidence, augmented
Kon-Tiki (2012 film) One significant inaccuracy is absence of indigenous Polynesians from the cast. The scenes depicting Heyerdahl's experiences on Fatu Hiva were shot in Thailand with Thai extras who do not resemble native Polynesians, and who are shown holding compound spears not typical of the Marquesas Islands, and weaving rattan baskets, of which neither the technique nor the plant material are native to French Polynesia. The film focuses on Heyerdahl's theory that Polynesia was first populated with humans from Peru, but it ignores the Norwegian's more ethnocentric speculations that the original Kon-Tiki voyage was undertaken by a race of tall white bearded