Playless Play 玩而不玩 The ZOZ Koans of Dungeon Master Foo

From the introduction:

Dungeon Master Foo once said to a visiting game-designer: “There is more old-school nature in one roll of a search check than there is in a hundred fully-detailed secret doors and traps.”

The game-designer, who was very proud of his mastery of the Old Ways, said: “How can this be? Foiling traps and opening secret doors by interacting with the in-game fiction instead of the game mechanics is the very essence of old-school!”

Dungeon Master Foo replied: “That is so. Nevertheless, there is more old-school nature in one roll of a search check than there is in a hundred fully-detailed secret doors and traps.”