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The Map That Has to Lie

The Map That Has to Lie

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Why does Greenland look enormous on some maps? And why can the shortest route between two cities appear curved? Turning a round planet into a flat surface creates an impossible problem: something has to be distorted. This chapter explores the mathematics of map projections, from Mercator to maps designed to preserve area rather than shape. Distances, directions and sizes change depending on what each projection chooses to protect. A flat map cannot preserve every geometric truth at once. Before asking which map is more accurate, there is a more important question to answer: accurate for what?

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