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David Beeler and Tom Konkle star in one of a series of sketches from the two man British sketch show, Dave and Tom. In this series host Brian Forbes interviews the author of a large volume of books on Cartography. Try for more information on this video The heroic theory of invention and scientific development is the hypothesis that the principal authors of inventions and scientific discoveries are unique heroic individuals—"great scientists" or "geniuses." A competing hypothesis ("multiple discovery") is that most inventions and scientific discoveries are made independently and simultaneously by multiple inventors and scientists. Cartography (from Greek chartis = map and graphein = write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively. The fundamental problems of traditional cartography are to:[citation needed] Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as toponyms or political boundaries. Represent the terrain of the mapped object on flat media. This is the concern of map projections. Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of generalization. Reduce the complexity of the characteristics ...