What it means
Human-in-the-loop (HITL) is a setup where a human oversees the AI's work. The AI might do the heavy lifting or make a draft, but a person makes the final decision or corrects errors before the result is used.
Why it matters
It is a critical safety net for high-stakes fields like medicine or autonomous driving. It ensures that AI errors are caught and that the system improves over time by learning from human corrections.