[joelhaasnoot]

There's also a lot of other use cases! For example, if you have a train schedule with stations and times, you often aren't told how the train will navigate between those stations. In some countries it's straightforward but for instance SNCF TGV services in France sometimes go hours without stopping at a station, crossing a lot of distance. In that case a solution like this can help you find an educated best guess to show users on a map.