What is systems shape behavior?

Systems shape behavior is a concept in personal epistemology: The structures and incentives of an organization determine individual action more than personality does.

Example: A conscientious, ethical employee joins a bank whose compensation structure rewards cross-selling eight products per customer. Within months, she's opening unauthorized accounts. She hasn't changed. The system selected the behavior. When Wells Fargo's incentive structure was finally dismantled, the fraud stopped — not because employees became more ethical, but because the system stopped rewarding the wrong thing.

This concept is part of Phase 9 (Context Sensitivity) in the How to Think curriculum, which builds the epistemic infrastructure for context sensitivity.