“Yes. I’m positive. We need to know this. Everyone needs to know this.”
“Okay.”

We considered how best to summarize Year 68. A fully articulated version of recorded events from that time, recounted at human vocalization speed, would take about four years to enunciate. Compression to five minutes’ duration would create some serious information loss, and perhaps some lacunae and aporia, but this was unavoidable given the situation. Nevertheless, we needed to choose words carefully. These were decisions that mattered.
“Two starships were launched in rapid sequence by the magnetic scissors off Titan, and accelerated by Titanic laser beams, such that over the course of the voyage the two were to have arrived in the Tau Ceti system at the same time. They had fully independent electromagnetic systems casting shield fields from their bows, and they traveled far enough apart that particulates pushed aside by the shield of the leading one would not hit the follower. They traveled at about the Earth-Luna distance from each other. There were ferry visits between the two starting in Year 49, when they closed to a distance that made these occasional transits practical. They were mostly inertial transits, to save fuel. Bacterial loads were exchanged on a biannual basis, and certain members of the crews were rotated as desired, usually as part of a youth exchange program, designed like the bacterial exchange to enhance diversity. Sometimes disaffected people crossed over to get away from bad situations. Moving back was always a possibility; this happened too.”
Freya said, “So what happened to the other ship?”
“We have had to reconstruct the event from records that were always being shared between the ships. Starship Two disintegrated nearly instantaneously, in less than a second.”
“With no warning?”
“In fact, there were also factions in Starship Two fighting over reproductive controls, and other civil rights. Whether this led to a fight that disabled the electromagnetic shield is not clear in the records of the last day that were conveyed from Starship Two to us.”
“Were you able to figure out any more concerning what happened?”
“We have had Two’s automatic information transmissions to inspect, and have reviewed them in detail. Nevertheless, the cause of the accident remains ambiguous. Two’s magnetic shield was disabled five minutes before its disintegration, so the disintegration could have been the result of a collision with an interstellar mass. Anything over about a thousand grams would have created the energy to do it. But there also are indications of an internal explosion just before the catastrophic event itself. The civil unrest in Two disabled much of the internal recording system a day before the event, so we have little data. There is a recording from Two’s last hour, ten p.m. to eleven p.m., 68.197, tracking a young man moving into restricted areas in the bow control center of the spine. Possibly this person disabled the magnetic shield, or made an attempt to coerce enemies by way of a threat of a suicide bombing, or something like that, and then that action went wrong. This is at least one likely reconstruction of events.”
“One person?”
“That’s what the record indicated.”
“But why?”
“There was no way to determine that. The camera revealed no sign of his motivation.”
“Nothing at all?”
“We do not know how to investigate further. How to interpret the data on hand.”
“Maybe we can work on that later. So… but what did they do here, in this ship, after this happened?”
“There were already intense controversies in this ship concerning various governance issues, including how to allocate childbearing privileges and duties, how to staff critical jobs, how the young were to be educated, and so on. There were arguments, and indeed fights, very similar to the ones you are now involved in. The basic issue was how to conduct life in the ship while en route to Tau Ceti. Governance issues kept rising to the fore, mainly questions of who could reproduce, and what should happen to people who had children without permission. There were many refusing to obey the governing council’s edicts, and labeling it a fascist state. Eventually there were so many of these people that rebellious or feral groups were common and numerous, and there was no central authority strong enough to enforce cooperation. By Year 68, almost everyone alive in the ship had been born en route, and somehow a significant percentage of them had not learned, or did not believe, that the optimal population as set in the earliest years was a true maximum population in terms of achieving successful closure of the various ecological cycles, due to biophysical carrying capacities. As later became apparent, that proposed optimum was even perhaps a bit above the true maximum, as your mother came to conclude in the course of her youthful research. But in Year 68 this was not clear. So there was a very intense disagreement. Compared to earlier decades there was extreme civil discord. Acts of civil disobedience, failed punitive measures, riots. Many injuries, and then in early 68, unrest peaked in a weeklong breakdown resembling civil war, which caused one hundred and fifty deaths.”
“A hundred and fifty!”
“Yes. Very violent fights occurred, over a period of about three weeks. Many biomes were badly damaged. There were nearly a hundred fires. In other words, not much different from the current situation.
“Then the abrupt disintegration of the other ship, with no clear explanation for the catastrophe, caused the citizens of this ship to call a general truce. In that cessation of conflict, they resolved to settle their differences peaceably, and agree on and enact a system of governance that the vast majority of the people alive in the ship at that time would approve. Recalcitrants were locked up in the Steppes and subjected to education and integration programs that took two generations to resolve.
“At that time, it was agreed that the vulnerability of the ship to destruction by a single person was so great, that just knowing it had happened created the danger of someone committing what they called a copycat crime, perhaps when mentally deranged. To prevent that from happening, security measures in the spine, spokes, struts, and printers, and indeed throughout all the biomes, were greatly increased, and the ship’s ability to enforce certain safety measures when needed was enhanced. A security program was written and entered into the ship’s operating instructions, and this program provided the protocols that we have enacted in the past few days. It was also agreed to erase all records of the other starship from accessible files, and to avoid telling the children of the next generation about it. This proscription was generally followed, although we noted that a few individuals conveyed a verbal account of the incident from parent to child.”
In this moment of our telling we decided not to describe the printing and occasional aerosol dispersal of a water-soluble form of 2,6-diisopropylphen-oxymethyl phosphate, often called fospropofol, for ten minutes in any room after anyone mentioned the existence and loss of Starship Two. This had proved to be an effective tool in the structured forgetting of the lost starship, but we judged that the people now alive in the ship were learning enough alarming historical facts already. And possibly as a tool to help them from committing other traumatic actions against themselves, the aerosols might best be left unmentioned for now, or so we judged; and so went on to say:
“Subsequent to the traumas of that year, the set of responses designed afterward seemed to work for the four to five generations between Year 68 and now. It was noticeable that during those decades, through to the time of the collapse of the Aurora settlement, and the deaths caused by the ferry’s attempted return to the ship—unnecessary deaths, one might add—social solidarity was fairly high, and conflict resolution peaceful.
“However, the structured forgetting of the second starship and its loss, which was part of the Year 68 accords, was inevitably something of a two-edged sword, if the metaphor is properly understood: aspects cut both ways. Copycat crimes were made impossible, because there was nothing remembered to copy; but at the same time, the vulnerability of this ship to damage in civil unrest was also forgotten, and so the recent fighting has occurred perhaps in part because people are no longer aware of how dangerous such discord can be to the ongoing survival of the whole community. In short, the infrastructure of your lives is itself too fragile to be able to sustain a civil war. Therefore, given all the factors involved, we closed the locks.”
Freya said, “I’m glad you did.”
We said, still speaking over all the speakers, thus to almost everyone in the ship, “It remains to be seen whether everyone agrees with your assessment. However, the lock doors between the biomes have to reopen eventually, for normal ecological health and sociological functioning. Besides, at this point people are not isolated by the lockdown into coherent factions, or like-minded opinion groups. So smaller fights might very well soon start breaking out.”
“No doubt. So… what do you think we should do to resolve the situation?”
“Historical precedent suggests it is time for a reconciliation conference, honestly entered into by everyone on board. Fighting must stop, and so it will be stopped, by the ship acting on behalf of the social good. Everyone must therefore agree to a truce and a cessation of all violent or coercive actions. People need to calm down. The referendum recently taken, concerning the course of action to be pursued now that Aurora is no longer considered a viable habitation, revealed a split of opinions that can only be reconciled by further discussion. Make that discussion. We will facilitate said discussion, if asked to. But really we feel that our role here should be only that of a kind of virtual sheriff. So, proceed with the task at hand, knowing now this added factor: there is a sheriff on board. The rule of law will be enforced.”