If men learn this, it will implant forgetfulness in their souls. They will cease to exercise memory because they rely on that which is written, calling things to remembrance no longer from within themselves, but by means of external marks.

Plato against writing

when you have a certain world vue your frame of reference is this one. And you will prefer to hide reality for a very long time before admitting you made a poor decision. Worse admitting your point of view is not moral, or problematic.

All of this to say, people will not make a direct correlation between facts and their acts. They will find another plausible (for them) explanation.