Graduated Withdrawal

Graduated withdrawal is the function Bruner's framework treats as the purpose of all other scaffolding functions. The scaffold exists to produce internalization — the conversion of externally provided support into internal capability — and internalization requires that support be withdrawn as the learner develops. Withdrawal is not abandonment; it is calibrated, directional, and responsive to the learner's demonstrated trajectory. Too sudden and the learner is overwhelmed. Too gradual and dependency calcifies. The effective scaffolder reads the learner's development and adjusts the rate of withdrawal accordingly — always moving in the same direction: toward less support, toward the learner's independent operation. AI scaffolding, as currently designed, has no withdrawal mechanism. The absence is not a missing feature. It is the structural condition that determines whether the most powerful scaffolding system ever constructed develops human capability or permanently replaces it.