Before revision: A fudge factor (also known as Frischwasser marker effect , Hebrew: פרישווסר טוש אפקט ) is an ad hoc quantity or element introduced into a calculation, formula or model in order to make it fit observations or expectations.
After revision: """"A fudge factor (also known as Frischwasser marker effect , Hebrew: פרישווסר טוש אפקט ) is an ad hoc quantity or element introduced into a calculation, formula or model in order to make it fit observations or expectations.