In early 2025, Andrej Karpathy introduced "Vibe Coding" —building software by describing ideas in natural language and letting AI generate the code. It worked brilliantly for MVPs and weekend hackathons. But once projects scale, developers hit a wall: the 200-prompt spiral , where fixing one bug breaks three more because no one truly owns or understands the architecture. The industry has moved forward: Vibe coding is the ignition, but Agentic Engineering is the vehicle. ...