Brief, strategy & proposition · Working
Reason to believe
Also called: RTB
ELI5
Evidence or product truth meant to make the proposition credible.
Used in conversation
“Can we align with the client on the reason to believe before the bid is locked?”
Definition
Evidence or product truth intended to make the proposition credible.
Here “Reason to believe” means: Evidence or product truth intended to make the proposition credible.
Pitch context
You may hear this during a commercial brief, treatment, bid, award or pre-production process.
Why it matters: Helps interpret the brief, director treatment, bid, award, production process and campaign deliverables.
Sources & evidence · 6
Direct term-level sources and supporting source families.
- AICP — AICP Bid FormDirect source · primary · checked 2026-08-14
- AICP — Suggested Best Practices for Bidding and Bidding Reference GuideDirect source · primary · checked 2026-08-14
- IPA / APA / ISBA — Production Pitch Process Initiative and Best PracticeDirect source · institutional · checked 2026-08-14
- pitch.dog — Pitch Dictionary Deep Research SynthesisDirect source · practitioner · checked 2026-08-14
- World Intellectual Property Organization — Rights Clearance: A Guide for Independent FilmmakersDirect source · primary · checked 2026-08-14
- Association of Independent Commercial Producers — AICP Guidelines and Best PracticesSupporting source family · institutional · checked 2026-08-14