Memory rewriting is the persistent insistence on a false version of past events with the aim of overwriting your accurate recollection. It exploits a genuine, well-documented feature of human cognition: memory is reconstructive, not a recording, and it can be reshaped by suggestion after the fact. Elizabeth Loftus’s research on the misinformation effect shows that post-event information — even confidently delivered wording — can alter what people believe they witnessed, and related work shows that mere repetition raises a claim’s felt truth (the illusory-truth effect). A manipulator does not need special powers; they need only a confident alternate account and time.
That is why, if this is happening to you, the fact that you feel less sure is not proof that you were wrong in the first place — it is the predictable result of the tactic operating on normal memory. The tell is the pattern rather than any one exchange: the revisions are detailed and confident, they favor the other person, and they concentrate on private moments no one else can confirm. Your growing uncertainty is manufactured, and manufactured doubt is a signal, not a verdict on your reliability.
Because the vulnerability is in unaided memory, the defense lives outside it. Records made close to the event, preserved digital artifacts, and comparison with other witnesses give you fixed reference points that repetition cannot erode. You may not be able to stop someone from retelling history their way, but you can keep an anchor to your own — and, where this is part of a larger pattern of control, bring in trusted people and professional support who can help you see it clearly.