https://en.wikipedia.org/wiki/Factoid
Of course, like "Literally" & "Decimated", the accepting meaning has drifted since then...
Decimated comes from the Roman military punishment "Decimation" where for some military unit being punished, 10% of their ranks were to executed by their colleagues.
The most literal meaning of decimated is "to reduce by 10%" but the common meaning is from the complete and total destruction of morale and resistance that results from being forced to kill your colleagues.
Which is why the modern 1st definition is:
> "kill, destroy, or remove a large percentage or part of."
"Literally" is literally my biggest pet peeve. Changing from 2 spaces to 1 at the end of sentences is another.