Language models write convincingly, even when they are wrong. Anyone using AI needs a review process.

Why models make things up

A language model predicts the next word that fits statistically. It does not access a secured database of facts. That is why an answer sounds fluent even when the source, figure or connection is invented.

Typical patterns

  • Invented sources, studies or quotations.
  • Wrong figures, dates and names.
  • Outdated information without any note on the state of knowledge.
  • Confident wording without any uncertainty.

Four checks worth doing

  • Ask for the source, and open the source yourself.
  • Always verify figures, legal and medical content.
  • Have answers broken down into checkable parts.
  • Work with your own documents: provide current texts as reference.

Technology alone is not enough

Risk management frameworks such as the NIST AI Risk Management Framework rely on four steps: understand context, name risks, measure impact, apply controls. Human oversight remains decisive, especially for decisions with consequences.

A wrong answer is written quickly. A checked answer builds trust.

Conclusion

Hallucinations are not an outlier but a property of the system. Those who know this verify, and use AI where verification is possible.

Sources & further reading

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