@dgm.america: AI hallucination = an answer that sounds right, but is false. It's not lying — the AI doesn't know it's wrong. It's a guess, said with total confidence. It shows up 3 ways: fake facts, fake details, fake sources (courts have flagged 2,000+ cases of fake AI citations). Why "hallucination"? The word means seeing something that isn't there — like finding a face in the stars. Why it happens: AI predicts the next likely word. Spelling has patterns; a birthday doesn't, so it guesses. And tests reward guessing — a blank scores zero. In OpenAI's test, a model that almost never said "I don't know" was wrong 75% of the time; one that skipped when unsure, 26%. Can it be fixed? Not completely — but an AI that's allowed to say "I don't know" guesses less. The one-line fix: add "If you're not sure, say I don't know" to your prompt. Save this card for later. 🔖 #AI #ChatGPT #AIhallucination #whatis #techexplained

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Sunday 18 October 2026 08:03:07 GMT