Unfamiliarity is not itself a technical ruling of weakness. A reliable transmitter may preserve material others did not. An unusual report from an unreliable transmitter demands examination of his reliability, corroborating routes and contradictions before acceptance.
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Does unfamiliarity alone prove weakness?
Avoiding Unreliable Transmitters: Critical Reception of Reports and Historical Claims
Unfamiliarity is not itself a technical ruling of weakness. A reliable transmitter may preserve material others did not. An unusual report from an unreliable transmitter demands examination of his reliability, corroborating routes and contradictions before acceptance.