This factor, however, will only explain a localized loss here and there. It will explain the loss of the canoe on isolated groups of islands but it will not account for the absence of the bow and arrow or of pottery over large areas of Oceania. The skilled craftsmen would not be likely to die out simultaneously among all the peoples of an extensive area.
William Halse Rivers Rivers, FRCP, FRS was an English anthropologist, neurologist, ethnologist and psychiatrist, best known for his work treating World War I officers who were suffering from shell shock. Rivers's most famous patient was the poet Siegfried Sassoon, with whom he remained close friends until his own sudden death. Rivers was a fellow of St John's College, Cambridge, and is also notable for his participation in the Torres Straits expedition of 1898 and his consequent seminal work on the subject of kinship.