Plain English Meaning
If you really understand something, you remember it. If you just memorized it without understanding, you tend to forget it — especially when you need it most.
Full Definition
An instructional principle stating that information which a learner genuinely understands is retained far more reliably and for longer than information that has only been memorized. When a student grasps the underlying meaning, structure, and purpose of material, the brain stores it in a connected, retrievable way; rote-memorized facts without understanding tend to fade quickly and resist recall under pressure.
Context Anchor
Seen in aviation instructor training when discussing how students learn, retain procedures, and apply knowledge in flight.
Why Pilots Care
Pilots and instructors care because aviation knowledge has to hold up under stress — during a , in , or in an . Memorized answers tend to evaporate at exactly those moments. Knowledge built on understanding stays when it counts.