The Game is Made of Holes

The fruitful void, whitespace, rules-lite, et cetera. A set of role-playing rules will often be like a Swiss cheese: Some overarching rules to provide structure, and holes to fill at the table. When designing a game, you must choose the scope and specificity of the rules. You probably need to (perhaps metaphorically) write down at least one rule for what you're making to be considered a game (though you may convince me otherwise), and conversely, there is a limit to how many rules you can write down if you intend to finish writing within your lifetime. When then, is the correct amount of rules? Surely this must be a solved problem in the field of game design. The correct answer is of course whatever you think it is. We play game to have fun, or at least some kind of desired experience. If a game provides that without you feeling chafed under the weight of the rulebook, or lost in a big, empty or not very fruitful void, then the game has the right amount of rules for y...