Don’t Roll Dice: Automatic Successes
New groups learning Principia Canonica tend to make the same mistake: they roll the dice too often. Traditional roleplaying games train players to treat every action as a probability check. Your character attempts to do something, so you roll. Numbers determine whether the attempt succeeds. That’s the pattern that’s become the expected rhythm of roleplaying. The table starts to interpret every action through the math, asking what modifier applies or calculating what the probability of success might be. You have your character do the thing not because it’s logically, in character, what they would do. Whether the character has a good enough chance to attempt the task at all impacts choices (we’re not going to get into character death today, but that final consequence is a key driver of player behavior). When that mindset carries over into a narrative system, it can lead to measuring a character’s competence instead of their personality, goals, and motivations.
It’s a statistical approach to what's fundamentally a humanities-grounded activity. Roleplaying is collaborative storytelling. It’s writing and acting. Other media with a foundation in literature or performance rarely linger on whether competent characters can or should perform routine tasks. An Olympic sprinter outruns ordinary people, a trained detective recognizes the clue others overlook, a skilled safecracker opens the vault that amateurs can't even begin to approach. These moments establish competence, but they don't create tension because nothing unusual interferes with the character’s ability to succeed. Well, nothing other than dice and probability.
(You say roleplaying isn’t grounded in literature; I call your bluff, and raise you Appendix N.)
Stories move past those moments quickly because, if we can be blunt for a moment, they aren't the point. What matters is what happens when circumstances disrupt that competence, and force the player characters to respond under pressure. When the situation changes, the outcome becomes uncertain, and that’s when the results actually start to matter.
Principia Canonica doesn't treat dice as the catch-all universal test of character efficacy. The system assumes that they succeed at routine actions that fall comfortably within their experience and training. If a detective searches an office under ordinary conditions, they will find what a competent investigator should be capable of finding. When a professional safecracker works on a lock with the proper tools and enough time, the vault opens. Pausing the story to measure those outcomes statistically adds the cost of doing arithmetic, but fails to add substance or meaning.
Things become interesting when pressure interferes with the character’s normal expression of competence. The detective is searching the office, but the suspect has made efforts to obscure the evidence. There’s been a curve thrown to the safecracker, because it’s a different lock than they planned for and they didn’t bring the right tools and they only have three minutes before the security comes around again. Or, to provide an example that might be more familiar, the barbarian cuts through the hordes of orcs without breaking a swear or rolling a die, then the crowd parts and the boss monsters appears, smirking and carrying a ridiculously large hammer.
The task itself hasn't changed. The surrounding circumstances, however, have suddenly become unstable. The outcome matters now, because success or failure have stakes, there is risk not just to the characters but to the resolution of the plot. Those forces will reshape the direction of future events.
Dice enter the story at the point the roll represents the collision between the character’s ability and the unusual pressure surrounding the action. Success moves events in one direction, failure moves them in another, and both outcomes produce consequences that will push the narrative forward. The dice, therefore, measure pressure rather than difficulty, challenge choice rather than skill, and mark the moments when circumstances challenge what the character could normally accomplish.
Thinking about play this way fundamentally changes how players approach their characters. The focus shifts away from calculating success rates, and toward understanding the character inside the scenario. What does the character want right now? What pressures surround them? What risks are they willing to accept to achieve their goal? Those questions keep the attention on their motivation and decisions, and the consequences to the story, rather than on arithmetic.
This perspective also explains why the concept of struggle is central to good drama. A story where the character succeeds effortlessly every time is boring, because nothing threatens their character’s abilities. A story where a supposedly capable character fails constantly at routine tasks feels fake and forced, for the opposite reason. The tension that holds your attention lies in the middle, where competent people encounter circumstances that challenge them in ways they didn't expect. When characters have to fight for success at something they normally do well, their choices reveal their personality and priorities, while the outcome reshapes the world around them.
Dice exist to capture those moments of disruption. If the action falls comfortably within the character’s abilities and the situation remains stable, the character succeeds without a roll and the story moves forward. When an instability appears, pressure surrounds the action, and the result can change what happens next, that’s the moment to pick up the dice.
