It amazes me how often people fail to understand how AD&D 2nd edition (and 1st ed and OD&D, as well) are written using standard English, primarily. Jargon usage is minimal, especially compared to later iterations of D&D, as well as many other RPGs. A case in point is the stoneskin spell. The spell is written in English, rather than jargon, and yet people still seem to insist that it does things it does not, such as block touch effects from spells (shocking grasp) or touch based-effects, such as those of ghouls or vampires. However, even though the latter are usually caused by a damaging attack by claws, it isn’t necessary. All of those abilities would take effect, if the creature wished it, from a simple hand shake or a pat on the shoulder. The relevant line in the spell description is “the affected creature gains a virtual immunity to any attack by cut, blow, projectile, or the like;” the key point here is that damage by forceful strikes are what is blocked. None of the abilities mentioned above, which are often claimed to be blocked by the spell, fit the description of attacks that are blocked. Similarly, the use of “attack” in that line, as well as the line “This limit applies regardless of attack rolls and regardless of whether the attack was physical or magical” has led many people to claim that you don’t roll attack rolls at all. But that begs the question: if you roll no attack rolls, do the attacks automatically hit and cause no damage, or automatically miss? In either case, what’s the logical reasoning for believing *either* of these cases is true? Simply put, the spell claims nothing of the sort; you still technically need to roll attack rolls regardless of whether or not the stoneskin spell will completely block the effects of the attack or not. A DM can handwave attack rolls if there is no chance of an attack having an effect or not, but even so it is often better to require attack rolls in order to let the PCs discover on their own that a foe is protected.
The silliest thing about arguments against the way the spell is written, though, are the lengths of twisting people will go to in order to preserve their belief. For example, I’ve had people claim that Skip Williams, the author of Dragon Magazine’s Sage Advice column and the DM’s Option: High Level Campaigns, where clarifications of the spell have been published, is wrong so often that everything he says should just be discarded entirely. In addition, I’ve also seen the argument that since the word “blow” is not defined in the game, it can mean anything from a “giant’s maul to the touch of a feather,” which completely disregards what the word means in the English language. If you have to disregard the English definitions of words used by the game to make your argument valid, your argument is not valid.