Prior to navigation systems, maps were useful, as well as knowing how to quickly situate yourself while using a map. Some of the best maps are from MapArt.
Navigation be it in a vehicle or a smart device is appreciably easier to use than any map, since the navigation will immediately situate you, and guide you to your destination. However, you having knowledge of your destination is very useful.
The early navigation systems relied on mapping CD's which required regular updates of the CD's to have current maps. As well the hardware was bulky, often located in the trunk of a car or the cargo area of a utility vehicle.
One thing has not changed, all navigation systems rely on GPS satellites which orbit at 20,000 kms above earth. To locate your position the navigation system must capture a signal from at least 3 satellites. Think about this for a moment. Here you are in your vehicle, capturing signals from 3 satellites orbiting at 20,000 kms to know where you are, and where you are going. Fascinating...while we take it for granted.
The stubby antenna on the roof is capturing GPS signals, satellite radio signals, while you are enjoying uninterrupted music, and know exactly where you are at all times. Pretty cool stuff.
Obvious that every navigation system, although they all tell you your position, and guide you where you want to go, have different features in locating various landmarks.
One more thing
The stubborn old fool driving that insists in absolutely knowing where he is going, asks the younger individual "Are we on the right road, you have been here several times?"....the reply "Don't know, every time I was here I followed the navigation system".
One last thing
The old fool still insists in knowing where he is using his brains, and not relying only on a navigation system. It raises the fun factor of navigating unfamiliar locations.