Hit points are a combination of actual physical constitution, luck and/or magical or divine factors. Ten points of damage dealt to a rhino indicated a considerable wound, while the same damage sustained by the 8th level fighter indicates a near miss, a slight wound, and a bit of luck used up, a bit of fatigue piling up against his or her skill at avoiding the fatal cut or thrust. So even when a hit is scored in melee combat, it is more often than not a grazing blow, a scratch, a mere light wound-which would have been fatal (or nearly so) to a lesser mortal.