Annual Review of Split Bill Rounding
Two unchallenged instances of bill rounding are sufficient to establish procedural precedent.
Q1: Baseline Conditions
The subject group entered the review period with no formal agreement regarding the handling of fractional bill amounts. Standard procedure was to round to the nearest whole number, divide, and proceed. No party recorded objections. This was taken as consent.
Rounding direction was not standardized. In practice, it defaulted to whichever party produced the total first. This is normal.
What is not normal is what happened next.
Q2: Pattern Emergence
Split bill rounding received a preferred place in the routine before anyone had named it a routine. The first instance was incidental. The second instance was also incidental. After the second instance, however, incidence ceased to be the operative category.
People began planning around it. The triggering situation had not yet occurred. Planning occurred anyway. This represents a significant threshold, one the subjects crossed without noticing and did not flag in any available record.
The rounding difference, it should be noted, did not fall randomly. It fell repeatedly on the same person. This person continued to round.
Q3: Escalation Indicators
Three escalation indicators were observed during the review period.
First: the behavior became anticipatory rather than reactive. Subjects began accounting for the rounding outcome in advance of the bill's arrival, which is not what casual behavior does.
Second: when a party proposed splitting with greater precision, the proposal was declined on grounds of effort. The rounding method was described, unprompted, as simpler. This is the point where a workaround for split bill rounding began to outrank the inconvenience that originally created it.
Third: the routine began defending itself. Precision was framed as pedantic. Fairness was framed as socially expensive. Rounding was framed as courtesy.
It is not courtesy. Courtesy is symmetric. The difference is not symmetric.
Q4: Projected Trajectory
Under present conditions, the following can be expected. Split bill rounding will continue unchanged. The person absorbing the accumulated difference will absorb it, because raising the issue now carries more social cost than the difference itself. The difference will not become visible until it becomes impossible to ignore, at which point it will be described as sudden.
It was not sudden.
The governing rule, stated plainly: a workaround for split bill rounding remains mandatory while nobody formally challenges it, and nobody will formally challenge it as long as challenging it costs more than absorbing the rounding. This equilibrium is stable. It is also, this office notes for the record, not an accident.
Annual review complete. No corrective action recommended. The system is functioning as designed.