HCD.28:10 - Architectural Rationale

Individually adequate tasks, materials and help can fail at their connections: an explanation may be sound but unavailable when the learner needs it, or feedback may arrive after the opportunity to correct. Comparing a whole learning route exposes these failures. A product for a future audience must make its preparation assumptions and supply conditions explicit; a programme for a known person must additionally fit that person’s actual starting evidence and work.

A supported individual route can supply the complete learning contribution. Add shared activity when the other participants provide something the target needs, and retain the required personal action. Keeping a common subject criterion across explanations, tasks and feedback prevents conflicting answers and makes a changed criterion’s consequences traceable. Changes in subject content, its acquisition and service operation can then receive their own repairs while useful parts remain available.