'An Agent Is a While Loop': A Clean Explainer Reframes Prompt + Loop Engineering as the Core Skill
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A widely-shared thread (~374 likes) distills agents to a while loop — the model runs, requests tool calls, tool results return to context, the model runs again — and argues 'loop engineering' (designing the stop/verify conditions and tool surface) is now as important as prompt engineering. It reinforces Karpathy's framing that managing autonomous loops is the new programmer skill. Useful as a teaching primitive for anyone onboarding to agent design.