Term
Castle Rock rule
An informal producing aphorism that divides films into four combinations: good or bad movies that either work commercially or do not.
In practice
The saying separates aesthetic judgment from market performance, but it is not a forecasting method and “works” is context dependent. Attribution to Castle Rock circulates in industry storytelling without a definitive primary record.
Usage note
Informal and subjective industry folklore, not a production standard.
Name origin
Commonly attributed to Castle Rock Entertainment, but the exact origin and first formulation are not established.
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Sources
- Hollywood Slang: selections from Movie Speak — Vocabulary.com