Simple definition of hallucination
An AI hallucination is when an AI system confidently says something that isn’t true or isn’t supported by its sources. It happens because the AI is guessing what words should come next, not checking facts the way a person would. For everyday users, this matters because you might get a believable but wrong answer for homework, health questions, or news. A downside is that hallucinations can spread misinformation, so it’s smart to double-check important claims with reliable sources.
How to explain hallucination to kids
Sometimes a computer helper tries to answer even when it isn’t sure. It can “make up” details that sound right, like when someone guesses on a quiz. It’s not lying on purpose. It just doesn’t know and is trying to fill in the blanks. That’s why we should check important facts.
Here’s how to think about it
Imagine you forgot the last page of a storybook, but you still try to tell your friend the ending. You might invent an ending that sounds like it fits—even if it’s not the real one. An AI hallucination is like that: a confident-sounding guess instead of the true answer.