The 80% Problem: The Last 20% Is Where the Engineer Used to Live
Summary
The article argues that AI can rapidly produce a working draft (the 80%), but the remaining 20% comprises edge cases and operational realities that require human judgment. It introduces the concept of synthetic competence and emphasizes planning to identify and address the hard, production-facing issues after deployment, while warning about skill erosion if the hard parts are automated away. The piece advocates maintaining and rebuilding hands-on reps through apprenticeship and deliberate practice to keep engineers’ judgment sharp in an AI-enabled development world.