> and the chapter on navigation hit me so hard I

Don't leave as hanging, what were they saying?

Hmm, it's very well written and I don't mean to butcher it. It touches on how the people of Polinesia would navigate and do it better than Western colonisers. It mentions tricks such as memorising reference points, understanding the cardinal directions, and whatnot. Print a map of your city and put it in the loo. I don't know, it's a great book and I won't do it any justice.