That is all.

It sounds nearly too small to matter, against everything that was at stake, but it was the thing that changed my fate, and I have come to understand exactly why.

When you are being made to doubt your own perception, your memory becomes a battleground, and it is a battleground you will always lose, because the other person is confident and present and constantly revising the record, and your own recollection is uncertain and pressured and alone.

As long as the truth lived only in my memory, Roman could win, every time, simply by being more certain than I was.