Wikipedia:You_can't_squeeze_blood_from_a_turnip
Wikipedia:You can't squeeze blood from a turnip
You can't squeeze blood from a turnip. – Anonymous
 | This is an essay. It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community. Some essays represent widespread norms; others only represent minority viewpoints. |
 | This page in a nutshell: Don't extend extreme gestures of good faith toward editors with an extensive problematic history. |
You can't get something out of someone who simply doesn't have it to give.
If a standard remedy exists for an editor who has done something wrong and the editor shows no sign of regretting the mistake, then go ahead and apply the standard remedy.
Extreme gestures of good faith need not be extended toward an experienced editor who consistently violates fundamental policies and rebuffs appropriate overtures. Some troublesome users do not want to change and the community's energies are limited.
Indeed, you really can't squeeze blood from a turnip.