But while we are working on that we just have to make educated guesses
History , the study of propaganda

Also I don’t want to know what that picture is from
That is a WW1 propaganda poster demonising the enemy (Germany, which would have been obvious at the time but you can tell today by the distinctive helmet) and encouraging men to enlist in the army lest their women be captured by these 'monsters'.
Here is another similar one.

I guess thats debatable. Usually I think of propaganda as ill intended. I don’t think that all exaggeration has bad intentions about it. Like hyperbole, we use it to emphasize something.
Either way it’s very confusing for historians

Propoganda is as old as history----but REVISIONIST HISTORY is perhaps the worst propaganda of all...
A time machine.
Agreed