English: 80 4-point "ley lines" pass through 137 random points. Original raster image by The Anome, vectors by Mysid. For a set of 137 objects taken 4 at a time, there are approximately 10400 possible combinations. Thus, the 80 straight line combinations, while rather visually overwhelming in the fashion of Edward Tufte's "chartjunk", constitute approximately 0.008 (eight-tenths of one percent) of the possible combinations – not precisely the sort of percentage to be encountered by chance alone, even on a dark night. A little math goes a long way.