It's possible you're referring to one of these concepts:
1. Setting as a character's catalyst: The setting can significantly influence a character's actions, motivations, and development. For example:
* A character stranded on a deserted island might develop resilience and resourcefulness.
* A character living in a war-torn country might become hardened or compassionate.
2. Setting as a reflection of character: The setting can be used to reflect a character's inner world and personality. For example:
* A character's messy and cluttered apartment might indicate their chaotic lifestyle or emotional state.
* A character's pristine and minimalist home might suggest their organized and controlled nature.
3. Character impacting the setting: Characters can also shape the setting through their actions and choices. For example:
* A powerful ruler might transform a city with their policies and construction projects.
* A revolutionary leader might inspire a rebellion and change the social order.
To understand what you're asking, it would be helpful to provide more context about the specific situation or story you have in mind.
Could you please clarify your question?