traditional Polynesian navigation 
The rediscovery of the techniques of traditional Polynesian navigation in the last half century or less, gives an intertesting perspective on accuracy of navigation and the western development of high technologies for this purpose. These traditional techniques include stars, trade wind directions, waves, using the canoe as a compass, following migrating birds and whales, cloud formations, changes in temperature and smell, floating debris and weed in the sea. All observations of the environment which made crossings of the Pacific Ocean by canoe possible, something we would imagine to be extreme.

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