“Of course I don’t have to do this,” one middle-aged man said, carefully cleaning the table with a damp cloth. He put the cloth in a little pouch, sat down beside him. “But look, this table’s clean.” He agreed that the table was clean. “Usually,” the man said. “I work on alien — no offense — alien religions; Directional Emphasis In Religious Observance; that’s my speciality . . . like when temples or graves or prayers always have to face in a certain direction; that sort of thing? Well, I catalog, evaluate, compare; I come up with theories and argue with colleagues, here and elsewhere. But . .
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