Why do I keep saying “just this once”?
The phrase works because it makes the current exception feel unique. If the same kind of moment keeps producing the same exception, the exception has become a rule.
You already decided what you wanted to do. Then the moment arrives and a sentence appears: just this once.
That sentence is powerful because it does not openly reject the rule. It preserves the rule in theory while granting the current episode an exemption.
If similar episodes keep receiving the same exemption, the real operating rule is no longer the rule you stated earlier. It is the exception process.
Decide what counts as an exception before the moment
An exception is easier to evaluate before you are inside the exact situation that benefits from it.
Define the narrow condition that would genuinely justify changing the rule. If that condition is absent, the decision stays closed.
This removes the current urge from the job of deciding whether the current urge deserves an exception.
Move exception criteria earlier than the tempting moment.
PRECOMMIT THE EXCEPTION.
- 1Write the rule you are trying to keep.
- 2Name the rare condition that would legitimately override it.
- 3Do not invent a new condition inside the tempting moment.
- 4If the condition is absent, keep the original rule.
- 5After the episode, review whether the exception criteria themselves need changing.
Rigid rules are not always appropriate. The point is to make exceptions explicit and testable, not to eliminate legitimate flexibility.
“Just this once” becomes a loop when each similar episode can declare itself exceptional.
Serkan Elbasan
Serkan Elbasan is the founder of the Institut für Kognetik and an independent researcher working on recurrence, structural invariance, rule–state separation and the formal conditions under which systems can modify their own rules.