The Bus Seating Protocol

    * Everyone -- with noted exemptions -- attempts to sit as far from each other as possible, leaving at minimum one person of space.
* If this is impossible, the following precedence rules are followed:
    * Seats behind an adjacent passenger avoiding passengers of great weight, homelessness, or mental illness, avoiding adjacent people on sides
    * Seats in front of an adjacent passenger avoiding passengers of great weight, homelessness, or mental illness, avoiding adjacent people on sides
    * Sitting "between seats" bus permitting and not uncomfortable
    * At this stage sitting directly next to someone is impossible, so find least person of great weight and/or mental illness and/or homelessness (preferring weight to homelessness to mental illness) to sit next to
    * Failing these, or adjacent people would be too mentally ill, homeless, or fat, stand.
* Bus seating order prefers back to front, unless the passenger is of great weight, elderly, or their stop is < 4km away, then it changes to front to back
* The arrangement is not stable for persons who are not of great weight or elderly (for those groups, it is stable), as follows:
    * Normal persons will move to a better seat fulfilling previous conditions weighing on distance of seat (closer is better)
    * Persons of great weight or the elderly will attempt to sit down, preferring but not strictly adhering to the adjacency rules.
    * The extroverted mentally ill or intoxicated will always try to sit near a passenger who will tolerate them. Passengers may move if the mentally ill or intoxicated person doesn't get the hint, according to the protocol.