As sort of a follow up to a thread I posted a couple days ago, it is intriguing that the Polynesians settled from the Solomon Islands to Hawaii to perhaps South America, bringing the sweet potato all across Polynesia. Yet, as modern archaeology attests, the Polynesians never made contact with Australia or the Aborigines, and to me this is weird. Why did they not make contact with Australia? If they ever did, would they be in a better position to expand than in South America?