Possibility of Anthropological Fideism

In this book D. Z. Zhong establishes a methodological principle for cross-cultural research called anthropological fideism. While anthropologists take for granted that natives don't really believe the unintelligible or inexplicable things they say and what they say should express a deeper social meaning Zhong contends that if we have a translation manual that can interpret a foreign language and if natives are asserting honestly then what natives say still express natives' belief no matter how absurd it seems.