because human witnesses are. It cannot perjure itself; only its interpretation can err. Only human failure to find it, study it, and understand it can diminish its value. The means by which physical evidence becomes proof is through forensic science. It often involves submission of some tangible object that was directly involved in the situation or incident (document, passport, weapon, narcotics, drugs, clothing, tax return, blood, hair, etc). Demonstrative evidence serves as an audio-visual…
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