What confuses me about the settlement map of the first people from Africa? The explanation is that at some point in their migration, the first people sailed across the Earth's largest ocean and primitive watercraft, boat, raft, canoe, and all around the ocean. Beautiful. Looking at the blue arrows, can you imagine cruising Papua New Guinea to Hawaii 55,000 years ago? How did they navigate such a vast expanse? People's like to talk about navigating by stars, but excuse me, how can you use the stars to find islands in the middle of a vast ocean if you don't even know they exist?