No map contains all the information about the territory it represents. The road map we get at the gasoline station may show all the roads in the state, but it will not as a rule show latitude and longitude. A physical map goes into details about the topography of a country but is indifferent to political boundaries. Furthermore, the scale of the map makes a big difference. The smaller the scale the less features will be shown.
Anatol Rapoport Science and the goals of man: a study in semantic orientation. Greenwood Press, 1950/1971. p. 85