graph LR MOT["Motivation"]:::r1 -->|"+"| UND["Understanding"]:::r1 UND -->|"+"| RET["Retention"]:::r1 RET -->|"+"| APP["Application"]:::r1 APP -->|"+ with delay"| EXP["Expertise"]:::r1 EXP -->|"+ with delay"| MOT UND -->|"+"| MSIG["Measurement Signal"]:::r2 RET -->|"+"| MSIG APP -->|"+"| MSIG MSIG -->|"+"| IDES["Instructional Design"]:::r2 IDES -->|"+"| UND LCQ["Learning Conditions Quality"]:::substrate -->|"+"| MOT LCQ -->|"+"| MSIG R1L[" R1: Learning Flywheel -- reinforcing "]:::looplabel R2L[" R2: Evidence Flywheel -- reinforcing "]:::looplabel B1L[" B1: Conditions Brake -- balancing "]:::looplabel classDef r1 fill:#4A90D9,stroke:#2C5F8A,color:#fff classDef r2 fill:#2D9C6F,stroke:#1E7A55,color:#fff classDef substrate fill:#D4A76A,stroke:#A67D3D,color:#fff classDef looplabel fill:none,stroke:none,color:#555,font-size:12px