Are you sure about that? D&D was being played long before there were any knowledge skills for characters. When were exploring dungeons in B/X I don't recall having access to the skill or knowledge of a fictional character to provide useful information. The characters had the skills to fight, cast spells, and other physical adventuring tasks that the player might not possess but that was expressed in our odds of success when rolling to hit or something similar.
Figuring out puzzles, how to avoid traps, parleying with violent monsters and negotiating with NPCs was all up to the player. Thus players who had learned from experience were better at these aspects of play regardless of character level. If you think about it, that was the entire reason tournament play was popular. Teams of players competing against each other playing the same pre-generated characters in the same scenarios. If only character skill and knowledge mattered what would be the point of tournament play? It was a test of overall player skill.
If the game is a story light hack'n'slash style game with little NPC interation, I suppose it is possible to run an all "player skill" game, though I would more accurately describe that as player skill activating character skill, hence my objection to the wording. For example, rolls to Find Traps or detect Secret Doors are essentially character skills prompted by the player, as are any rolled attempts to influence NPC attitudes. Additionally, the PCs almost always have character knowledge they can lean on, often informed by the DM during the course of play, despite any official knowledge skills or non-weapon proficiencies. The way in which that information is prompted is largely semantic as long as the results are consistent.
Last edited: