Kentucky James 说:
Cleave is a borderline case since people can't decide on whether it would be possible or not (spoiler alert: it wouldn't), but more important than that is how it feels. If a game "feels" wrong in core mechanics then it's impossible to play naturally, and the gameplay is basically ruined.
Spoiler alert: it depends*
One could quite feasibly cleave through a single limb, though I would agree that any blow to the torso shouldn't have any chance of cleaving (with the possible exception of glancing/deflected blows, i.e. you may as well have not hit them at all). Of course this is further dependent on the armor of the person being hit, but cleaving is still within the realm of possibility.
I feel there's just this collective, assumed straw-man in this thread that any degree of cleaving must include full-on penetration of a person's core, and therefore any amount of cleaving is unrealistic. This isn't an all-or-nothing issue. Why does everything have to be in absolutes?