It took me a while to understand what they meant by "north is in the centre". Here's my understanding, but correct me if I'm wrong: - Compare the Tupaia map vs

It took me a while to understand what they meant by "north is in the centre". Here's my understanding, but correct me if I'm wrong: - Compare the Tupaia map vs. conventional map shown in the middle of the article. - On the conventional map, if you want to go from "Marqueses Group" to "O'ahu", you can see that you need to travel North-North-West. - On Tupaia's map, start at the "Marqueses Group" point. A line through the centre of the map would mean you're travelling due north. The line to O'ahu has north slightly to your right, i.e. North-North-West. Or take Uiha to Rarotonga. - On the conventional map you can see it involves travelling East. - On Tupaia's map if you start on Uiha, the line to Rarotonga would have north directly to your left. Therefore you're travelling East.