Do you have a car? These days many people have at least one car. In the cars, they then have a car navigation system. Why do many people have a car navigation system? Is it efficient or inefficient? why do navigation system companies make a lot of money? Let's find out the reason. If we had to go to a strange or unfamiliar place, we would depend on only our memory, traffic signs and maps, compass for directions in the past. It was very inefficient and map, compass is especially low-tech products, so many people hoped to invent more help for us. Therefore, we had to spend a lot of time finding suitable roads and ways, as there was only one route.
We could not find the fastest route to our location because we did not know all the possible roads and routes leading to our destination.