The witnesses involved can be as convinced of a false memory as any other.

BBC: Can you trust your memory?

Because when he sees the request of someone who confessed to a crime now claiming innocence, Romney can think back to this issue and realize that the confession might well have been a false memory.

FORBES: Mitt Romney: Time Traveler?

The thing is, that memory is false.

FORBES: News International and the Charlotte Church Countdown Clock

They claimed that the testimony was false when the president went in and said that he was trying to refresh his memory about what the facts were, when he said that he wanted to know what Betty's memory was about what she heard, and when he said he was trying to get as much information as he could.

CNN

It has been amply demonstrated that it is possible for false memories to be created, whether deliberately or otherwise, which are as reliable as any true memory.

BBC: Can you trust your memory?

These relate to the encouraging of a false affidavit, the concealment of gifts, the assistance in employment, and the attempt to refresh the memory of his Secretary Betty Currie which done a second time several days later is pure and simple trying to influence her testimony.

CNN: Sen. Allard's closed-door impeachment statement

That science blends psychiatry and neuroscience, supposing, for instance, that patients with brain injuries produce false memories because it's their bodies' involuntary, natural way of healing, and that hormones can cause memory suppression.

CNN: Author makes peace with an undiagnosed illness