graph LR RE["Retrieval Effort at Study"]:::shared -->|"+"| SGE["Storage Gain per Study Event"]:::r1 SGE -->|"+"| SS["Storage Strength"]:::r1 SS -->|"+ with delay"| DM["Durability of Memory"]:::r1 DM -->|"+"| RE RS["Retrieval Strength at Next Study"]:::r2 -->|"+"| PF["Perceived Fluency"]:::r2 PF -->|"−"| RSF["Restudy Frequency"]:::r2 PF -->|"−"| RE RS -->|"−"| SGE R1[" R1: Storage Flywheel -- reinforcing, productive "]:::looplabel R2[" R2: Ease Trap -- reinforcing, corrosive "]:::looplabel classDef r1 fill:#4A90D9,stroke:#2C5F8A,color:#fff classDef r2 fill:#E8795A,stroke:#C0392B,color:#fff classDef shared fill:#7B8D8E,stroke:#4A6163,color:#fff classDef looplabel fill:none,stroke:none,color:#555,font-size:12px