What are Pre-Trained Models, Fine-Tuning, RAG...

Explained Using Food The Analogy That Finally Makes It Click Introduction I’ve been asked the same question a thousand times. It comes from senior engineers moving into AI. It comes from product managers in architecture reviews. It comes from f*ounders building their first AI product*. And it always sounds like some version of this: The Question I Hear Every Week “When should I fine tune instead of just prompting better?” “What exactly is RAG and is it better than fine tuning?” “I keep hearing a