Cam's Blog

January 28, 2011

A conservative definition of geodesic

Filed under: Innumeracy, Math — cfranc @ 7:53 pm

Jenna just pointed me towards the Conservapedia article on geodesics. It’s startling, really. Since the content could change, I’m going to copy it below:

A geodesic is the path of shortest distance between two points in a metric curved geometry. Because of the curvature, these distances are usually greater than the distance of a straight line between the two points. These geometries defy the common saying that “The shortest distance between two points is a line”; in fact, it’s a geodesic.

Cartographers must account for geodesics when taking their measurements and surveying the land. Cartography is the modern form of geodesy, the study of measurements along the surface of the Earth. The Earth is a spherical geometry, the most common curved geometry.

The second sentence boggles my mind.

And after this definition, the article gives an example of a “geodesic”:

Epcot at Disney World is perhaps the most recognizable example of a geodesic.

Not only is it idiotic, but it doesn’t even fit the definition that they just gave!


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