". . . I used this when explaining S&W to one of my new players. Now, in Baldur’s Gate, he would click on the ‘Find Traps’ skill and if a trap was nearby, it would be outlined on screen in a red box if detected. And he is aware that in a modern game (like Pathfinder), you would roll a 20-sided dice against your Find Trap skill.
But I explained it won’t work that way in S&W. After I described the environment, he would have to tell me how he goes about looking for traps. Does he examine the ceiling? Does he roll a round stone across the floor? Does he put his fingers in the mouth of the idol (always a dangerous move!)?
To try and bluff your way past the guard at the city gate, you don’t simply roll against your Bluff skill. You have to tell the same story to the Referee that your character is telling to the guard. With appropriate gestures . . .
The Referee may simply determine whether it worked or not. Or if the try was plausible, they may roll a dice against the character’s Charisma score, with a bonus or penalty, depending on how good the story was. So, even though there is a version of a skill check involved, it’s driven by the player action, not the character sheet . . ." (Byrne)
Byrne, Bob. "Why I Went Old School - or Swords & Wizardry vs Pathfinder" Black Gate. https://www.blackgate.com/2016/09/08/why-i-went-old-school-or-swords-wizardry-vs-pathfinder/ Accessed December 15, 2016