Out of desperation to win.
Flogging a Dead Horse was created on 1980-02-08.
This is a horse term. Flogging is beating with a whip. It does no good to beat a horse that is dead, because it will never get back up and work for you.
I think this may be more of a literary question than a horse one... I believe it refers to "flogging a dead horse" which it a way of saying you are trying to get get results when the issue has been resolved or dropped.
Usually "flogging a dead horse" imagine you are beating the horse trying to get it to move even though it is dead. It means that you are trying to do something that cannot be done.
- My efforts are futile - Pissing in the wind (Australian slang) etc. bark at the moon catch at shadows bite a file beat the air in vain plough the air etc.
It means that you should stop talking about the subject because it's useless and already been talked about enough. (A dead horse won't do anything for you, no matter how many times you beat it.)
The first known uses of this were actually worded "flogging a dead horse". The English politician John Bright used the phrase in 1859 in the House of Commons, and later in 1872 in reference to raising an issue in which Parliament seemed uninterested.
"To flog a dead horse" is the English equivalent to "to beat a dead horse", which means to do something over and over again when it is not necessary, whether it be saying something or doing something.
no
She isn't dead
she is alive
yes