In local travel the sun serves as a compass. Both man and bird perceive it, like Joshua, 

 as being relative to the earth and to time. 



being relative to his movement. Instead, the sun, at any moment of travel, 

 seems to move with the traveler at the same relative velocity. As the mo- 

 ments of travel become minutes and hours, however, the traveler (like 

 Joshua) perceives the sun moving relative to the earth. It rises out of the 

 east, crosses the sky in its arc, then disappears below the western hori- 

 zon. When in view, the sun serves as a cue to compass direction regard- 

 less of its position in the sky. Moving about his home valley or along his 

 village streets, man is guided by the familiar landscape; but as he travels 



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