Thousands of miles were traversed, without the aid of sextants or compasses. The ancient Polynesians navigated their canoes by the stars and other signs that came from the ocean and sky. Navigation was a precise science, a learned art that was passed on verbally from one navigator to another for countless generations. Sorry. This is bullshit. Navigation 2,300 miles precisely by "looking at the sky"? Not a chance. If they were off heading by just 2 degrees, they would miss their target island by hundreds of miles and never see it. "Other signs?" "Passed verbally?" LOL!