The development essay Brain Sandwich proposes three stages: a person understands the code and problem before using AI, delegates implementation, and then reviews the changes. A complete plan is unnecessary, it argues, but knowing the intended direction helps avoid following a problem that AI has defined incorrectly. The final stage checks the diff, complexity, and PR description so the person can explain what changed and why. Related writing likewise treats understanding and verification, rather than merely forwarding AI output, as the human contribution. This is practical advice for accountable collaboration, not research quantifying productivity effects.