What is army AAR four question framework?

Army AAR four question framework is a concept in personal epistemology: What happened what did you expect what can you learn.

Example: You spent six weeks leading a cross-functional initiative to migrate your company's authentication system. The project shipped on time, but the launch triggered a four-hour outage because the rollback procedure you documented had never been tested. Two weeks later, you have moved on to the next project. The outage has been fixed. The stakeholders have forgotten about it. But you have not forgotten the feeling of watching your carefully planned launch unravel in real time, nor the improvised fix your team cobbled together at 2 AM. You sit down and run a personal after-action review. What was supposed to happen: a zero-downtime migration with a tested rollback. What actually happened: the rollback script failed because it referenced a database column that had been renamed during the migration. Why the difference: you documented the rollback procedure in week two and never updated it as the schema evolved. What you learn: rollback procedures are not static artifacts — they are living documents that must be validated against the current state of the system before every launch. You write this down. You update your personal launch checklist. Six months later, when you lead another migration, you schedule a rollback rehearsal for the day before launch. It catches two issues. The launch goes cleanly. The AAR did not prevent the first failure — it was already in the past. It prevented the second one.

This concept is part of Phase 45 (Review and Reflection) in the How to Think curriculum, which builds the epistemic infrastructure for review and reflection.