>>212639935
They go out fishing for food, over time their boats get sturdier and their sailing skills improve, so they start pushing the limits a little bit at a time. They go a little further, they stay out longer, soon the ocean is like their second home. The experienced sailors noticed the intuition they built up for navigating was actually founded on something a little firmer, and if you followed the rules you would always get to the same place. When they went out with enough food, Njord willing, they would always be able to return home. Something like that.