Notes on verification

Confirmed by Wikipedia's own definitional framing and corroborated by Britannica and EBSCO, which describe espionage as a narrower activity within the broader intelligence field. Minor definitional variance exists among casual sources but authoritative ones agree. [cascade flags: aggregator_dropped_primary_exists,wikipedia_mirror_dropped_other_sources_exist | tier=unverified indep_score=0.375 clusters=1 claim_tier=everyday] [kind-backfill 2026-09-15: kind=interpretive eligibility=medium] [harvest 2026-09-23: +1 source(s) on new hosts; tier unverified->silver indep=0.75 clusters=2]