How did the Polynesian Wayfinders use Celestial mapping?

This video explores an intriguing concept that took place since the beginning of human evolution, Celestial mapping.

Since the dawn of sea voyaging thousands upon thousands of years ago, many worldly cultures integrated a complex geometry system by charting the star positions by observing it's celestial patterns.

Only one group of distinct people have mastered this technique during the last Ice age, the Polynesians.

Hawaiian Voyaging Traditions - Hawaiian Star Lines and Names for Stars article by Nainoa Thompson
http://archive.hokulea.com/ike/hookele/hawaiian_star_lines.html