Twenty-Four Hours of Courtesy

— I've received a notification, said Vaelen as they passed through the transit airport doors.
— What kind?
— A pre-offense notification. The Phraeth authorities are alerting me that my manner of walking is potentially interpretable as a gesture of contempt toward users of the central corridor.
Cyrus stopped.
— Your manner of walking.
— Apparently, directing one's gaze more than fifteen degrees above horizontal in a public space signifies on Phraeth that one considers the other individuals present to be beneath one's immediate field of vision.
— And you were looking at…
— The wall navigation screen. Which is, in fact, elevated.
They had been there four minutes.

Phraeth was a planet of high social density. Three billion individuals on a habitable surface equivalent to terrestrial Europe, organized into a civilization that had resolved conflicts of space and resources not through the rule of the strongest, but through the elaboration of a code of courtesy of surgical precision. On Phraeth, every gesture, every posture, every intonation carried a codified social value. Offenses were classified into forty-seven categories. Reparations were calculated according to a public scale available online.
Which made the death of Yuki Tanaka particularly complex.
Yuki Tanaka, thirty-one years old, communications systems engineer, had spent three weeks on Phraeth installing relay infrastructure for an interstellar company. She had died from a fall on a public staircase. The Phraeth authorities had concluded it was an accident. The liaison bureau had doubts, notably because two independent witnesses reported seeing someone near her at the moment of the fall — and because in the days before her death, Yuki had accumulated an unusual number of courtesy incidents.
— Definition of courtesy incidents, said Cyrus to their local contact, a small, brisk Phraeth named Soreth.
— Situations where a person commits an offense and the offended party does not report it within the legal twenty-four-hour window. The incident remains on the records of both parties. If incidents accumulate, it creates what we call a courtesy debt.
— And a courtesy debt, what does that mean in practice?
Soreth hesitated.
— Legally, nothing. Socially… a person with a high courtesy debt is considered to have torn the fabric. They are treated differently. Some refuse to speak to them. Others… respond.
— Respond how?
— Phraeth law recognizes the concept of delayed proportional response for unresolved courtesy debts. In extreme cases, it can legitimize acts that would otherwise be considered assault.
Cyrus let the silence settle.
— You're telling me someone may have pushed her down those stairs and your law might find that justified.
— I'm telling you it is a legal possibility that our judicial system will need to evaluate. That is why you are here.

Yuki Tanaka's courtesy incident register ran to nineteen pages.
Vaelen analyzed them while Cyrus questioned the victim's colleagues.
— She didn't know, said Vaelen when Cyrus returned. None of these incidents correspond to intentional offenses. They correspond to standard human behaviors: sustaining eye contact during conversation — which on Phraeth signals a challenge to the interlocutor's authority. Smiling at strangers — interpreted as an assertion of social superiority. Using the left hand to pass documents — the left hand being, on Phraeth, associated with private non-shareable acts. She did all of these things repeatedly, not out of contempt, but out of ignorance.
— Did her employer provide a local courtesy guide?
— They provided a generic sixteen-page interstellar guide covering rules common to forty-two planets. Phraeth was not mentioned.
— Employer negligence.
— Potentially exploitable. But that doesn't resolve the question of the death.
The witnesses to the fall were two Phraeth nationals, Keth and Marev, who had agreed to speak — reluctantly; Soreth had needed to negotiate their testimonial rights under the courtesy code, which took two hours and involved the formal exchange of three symbolic debt acknowledgments.
Keth said: there was someone behind her. Tall. Wearing standard work attire. He moved at the same moment she did.
Marev said: she looked to the side a second before she fell. As if someone had called her name.
— A contact, said Cyrus. Someone she knew, or someone who used her name to make her turn.
— Which implies premeditation, said Vaelen. And a specific target.
— Who held a courtesy debt against her?
— Seventeen individuals in her register. Among them, three with debt scores classified as critical: a security manager in her work building, a merchant in the transit district, and the Phraeth supervisor of her installation project.
— The project supervisor. He oversaw her work. He was in daily contact with her.
— And had accumulated twenty-two unreported incidents over three weeks. Which is, by Phraeth standards, a provocation level the code classifies as intolerable with obligation to respond.

Cyrus thought.
— Vaelen. If someone acts under obligation to respond, can they be prosecuted?
— That is the central question. The Phraeth code is ambiguous on this point: the obligation to respond is a right, not a duty. It does not constitute a license to kill. But it creates a grey area that the Phraeth judicial system has historically interpreted with considerable latitude.
— What we need is to demonstrate that Yuki's offenses were not offenses under the code. That they were involuntary acts by an uninformed person, and therefore the courtesy debt was void.
— To demonstrate that, the Phraeth code would need to recognize the category of unintentional offense through certified cultural ignorance.
— Does that category exist?
Seven seconds of silence. Which was, for Vaelen, long.
— It exists in three jurisprudential precedents from the First Contact period, two hundred and thirty years ago. It has never been applied since. It was designated an historical provisional exception.
— Provisional for two hundred and thirty years.
— The Phraeth legal system never formally declared the exception lapsed.
Cyrus stood.
— Then it's still in force.

The proceedings lasted a full day. The Phraeth supervisor, Thenn-Kar, denied having been present on the staircase. Building access control records placed him forty meters from the site of the fall at the time — which did not directly implicate him, but did not exclude him either.
What tipped the case was not direct evidence. It was the combination of two elements: first, the documented demonstration that Yuki Tanaka had acted under certified ignorance — her employment contract, the absence of specific training, internal company messages confirming she had received no Phraeth briefing. Then, the formal application of the three First Contact jurisprudential precedents, which rendered her courtesy debt null and void.
If the debt was void, there was no obligation to respond. If the obligation was nonexistent, Thenn-Kar had no legally defensible motive.
It was not a conviction. It was the elimination of a potential defense, which made ordinary criminal investigation applicable.
The Phraeth authorities took over.
On the ship, Cyrus closed his form.
Resolution method: revival of dormant jurisprudential exception combined with invalidation of cultural defense.

Vaelen added:
Note: I received a total of four pre-offense notifications during our forty-hour stay on Phraeth. All concerned behaviors I considered neutral. I responded to each within the allotted time. My courtesy debt score upon departure was zero point two — which is, according to Soreth, exceptional for a first-time visitor. I note this observation without comment.