Creative history writing works like creative economics.
History is the mathematics of reality. Oft times cross checking the math can be accomplished to ensure a portion of the formula is accurate. But regardless, any inaccuracies lead to the same bankruptcy of tomorrow.
When a lie is told, creating a history, sometimes cross checking can be used to reveal the lie. But whether verified or not, the sum of all prior reality must lead to the final conclusion of tomorrow. The objective of a lie is to alter that conclusion. But no matter what is omitted or added to one day's sum, the next day's tally must be compensated.