Think of it this way. In the days before online trip planners and GPS, if you wanted to know how to get from point A to point B, you would look at a map and trace out a route. But these days few people would use a map that way (I still do just because I enjoy the process but I think I'm in the minority). Instead, they would plug in their request and an algorithm would spit out a route for them. The route would appear on the map, but the map is no longer the tool for finding that answer.