What changed
Researchers at Georgetown University and the University of Washington published a study on September 23 showing that AI-generated summaries can alter human memory. They had 328 people watch a video, then read an AI summary 24 to 48 hours later. When the summary contained one wrong detail, only 45% of people correctly remembered what they actually saw, compared to 84% who read an accurate summary.
The study tested ChatGPT and Gemini summaries of accident videos. On average, the AI left out 52% of important details. Nineteen of twenty summaries failed to mention the main event: a car hitting a pedestrian. Even when people knew the summary came from AI, the wrong detail still changed what they remembered.
What you can do with it now
If your team uses AI to recap meetings, client calls, or site visits, add one step: before anyone acts on a decision from the recap, one person checks the recording or their own notes. Make it a different person each time so no single memory becomes the reference.
For high-stakes meetings — contract negotiations, safety reviews, client promises — have two people take notes by hand during the call, then compare them before you read the AI version. Use the AI summary to find the timestamp, then play that part of the recording. This takes an extra ten minutes but catches errors before they become the story your team tells itself.
What to keep in your own hands
Never use an AI recap as the only record of what someone agreed to pay, deliver, or fix. If a detail matters enough that you'd argue about it later, verify it against the source before you rely on it. For client-facing decisions, make "check the original" a required step before anyone sends a quote, confirms a deadline, or closes a ticket based on what the summary says.
The study shows your memory isn't a backup for bad AI summaries — the summary rewrites your memory. That means "a human will catch it" is not a plan. The plan is "a human checks it against something the AI never touched." Decide now which meetings require that step, then make it a checklist item, not a judgment call.