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Geographic maps are abstract representations of the world. It is, of course, this abstraction that makes them useful. [[Lewis Carroll]] made this point humorously in ''Sylvie and Bruno'' with his mention of a fictional map that had "the scale of a mile to the mile". A character notes some practical difficulties with this map and states that "we now use the country itself, as its own map, and I assure you it does nearly as well". This concept is elaborated in a one-paragraph story by [[Jorge Luis Borges]], generally known in [[English language|English]] as "[[On Exactitude in Science]]". | Geographic maps are abstract representations of the world. It is, of course, this abstraction that makes them useful. [[Lewis Carroll]] made this point humorously in ''Sylvie and Bruno'' with his mention of a fictional map that had "the scale of a mile to the mile". A character notes some practical difficulties with this map and states that "we now use the country itself, as its own map, and I assure you it does nearly as well". This concept is elaborated in a one-paragraph story by [[Jorge Luis Borges]], generally known in [[English language|English]] as "[[On Exactitude in Science]]". | ||
Road maps are perhaps the most widely used maps today, and form a subset of navigational maps, which also include aeronautical and [[nautical chart]]s, railroad network maps, and hiking and bicycling maps. In terms of quantity, the largest number of drawn map sheets is probably made up by local surveys, carried out by [[municipality|municipalities]], utilities, tax assessors, emergency services providers, and other local agencies. Many national surveying projects have been carried out by the military, such as the | Road maps are perhaps the most widely used maps today, and form a subset of navigational maps, which also include aeronautical and [[nautical chart]]s, railroad network maps, and hiking and bicycling maps. In terms of quantity, the largest number of drawn map sheets is probably made up by local surveys, carried out by [[municipality|municipalities]], utilities, tax assessors, emergency services providers, and other local agencies. Many national surveying projects have been carried out by the military, such as the British [[Ordnance Survey]] (now a civilian government agency internationally renowned for its comprehensively detailed work). | ||
== Orientation of maps == | == Orientation of maps == |