Weirdest thing about lies is that they define reality, what people ACCEPT as the truth becomes the truth and the lie becomes reality. If you get away with a lie then you've altered reality slightly. For example, we're told Hitler committed suicide in his bunker at the end of WW2, what if he was assassinated and we were just TOLD he committed suicide? Theres no way to prove different so we accept the lie and human history becomes "tyrants bunker suicide shock".
An accepted lie = reality.
Marvel at your newfound powers my friends, reality is what we make of it.
PS I'm not suggesting Hitler WAS assassinated, just using it as an illustration.