“Not understanding that great circles are the shortest paths on earth has caused some bizarre arguments. Many religions have preferred directions in which to pray. For example, the ancient biblical tradition among Jews was to pray facing Jerusalem. However, this was usually taken to mean that if one were west of Jerusalem, one should face east. Baha'i tradition states that one should face to Acre to pray. And early Christian practice was to face east. However, these practices were not entirely uniform, and not binding.”