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Negative-corpus argument

An invalid standalone conclusion in fire investigation that a fire was incendiary because no accidental cause was identified; rejected by NFPA 921 (2021 edition), the ENFSI Best Practice Manual, and the UK Forensic Science Regulator as insufficient without positive physical evidence of incendiary cause.

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Cal Fire Law Enforcement and Investigations DivisionDevil's eye burn patternHeel of a fireIgnition-point clustering analysisMultiple origin areasPour patternTime-of-day analysisTrailer evidenceUndetermined cause

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