All maps are an abstraction of the territory they represent. Reliance on the map as The truth risks missing the whole picture1. Learn How to read a map.
Maps assist with the cognitive understanding of a territory. The map my be a close representation (road map) or logical abstraction and reordering (London Underground Tube map).
Maps may contain errors, either in the map itself, or the way it is interpreted. The case of driving off a cliff could be one or both.
All Mental models are a kind of map and so subject to the same considerations describe here. In my Digital garden they are often synonymous.
The ideal map would contain the map itself, and a map of the map of the map1. Even at 1:1 scale this is not possible2.
Concept mapping and Mind maps are types of maps in the Knowledge management and PKM spaces where they abstract high level concepts to guide learning. Maps of content help organise information.
Maps are important. Expanding the area of my map of life and knowledge—removing fog— will help in Expanding my comfort zone.