«All The Weyrs of Pern», Anne McCaffrey

Prologue

The Aivas felt its sensors responding to a renewal of power from the solar panels on the roof above it. The wind must have become strong enough to blow the clogging dust and volcanic ash away from the panels. There had been enough of these incidents over the past 2,525 years so that Aivas had been able to maintain function, even if only at a very low maintenance level.

Running through the main operating circuits, Aivas found no malfunctions. Exterior optics were still obstructed, but once again the Aivas was aware of some activity in its vicinity.

Was it possible that humans had returned to the Landing facility?

It had not as yet completed its priority assignment: to discover a means to destroy the organism that had been termed "Thread" by the captains. It had received no significant input to allow it to complete that task, but the priority had not been canceled.

Perhaps, with the return of humans, that assignment could at last be completed.

Power began to swell its resources as the panels were uncovered; the removal was not haphazard, as would be caused by wind and weather, but was consistent with a workmanlike activity. As more of the panels were cleared, solar energy recharged the long-unused power collectors. The Aivas responded by distributing the revitalizing energy through its systems, running rapid function checks through circuits long dormant.

Aivas had been efficiently designed, and as power continued to be available, it found itself in full running order by the time the exterior sensors had also been uncovered.

Humans had returned to Landing! Many of them! Once again humankind had triumphed over tremendous odds. Aivas duly noticed through its adjustable optical elements that they were still accompanied by the creatures called fire-dragons. Noise, too, was now filtering through the audio channels: human voices speaking in unusual word patterns. A lingual shift? In 2,525 years, that was entirely likely. Aivas listened and interpreted, measuring the altered vowels and slurred consonants against the speech patterns that had been programmed into it. It organized the new sounds into groups and checked them with its semantics program.

Within its vision came an immense white creature. The descendant of the bioengineer's first production? Aivas did a rapid extrapolation from the biolab's files and reached the inescapable conclusion that the so-called dragons had also matured and prospered. It searched for, but did not find, "white" in the parameters of the engineered species.

Not only had humankind survived the incursion of Thread for 2,525 years of Threadfall, but it had flourished. The species had the tenacity to survive where others succumbed.

If humans had been able to return from the Northern Continent, had they also managed to destroy the organism? That would be well done. What must Aivas then do if its priority was superseded?

Humans, with their insatiable curiosity and restlessness, would undoubtedly have new tasks which an Artificial Intelligence Voice-Address System could undertake. They were not, Aivas knew from its memory banks, a complacent species. Soon those who worked to clear the debris of centuries would uncover the entire building and reach its position. It must, of course, react as its program ordained.

The Aivas waited.

1

By the time the Aivas had finished its recital of the first nine years of the colonization of Pern, the sun Rukbat had set with an unusually fine display. Not that many of the reverent listeners of the history that the Artificial Intelligence Voice-Address System narrated were aware of such externals.

During the hours that the Aivas's resonant tones had filled the chamber and penetrated to the hallway beyond, more people had crowded in to hear what it said, jostling each other to get an occasional look at the incredible moving pictures with which Aivas illustrated its narrative. Those Lord Holders and Craftmasters hastily summoned by fire-lizard messengers willingly crowded into the stuffy inner room.

Lord Jaxom of Ruatha had asked his white dragon, Ruth, to summon the Benden Weyrleaders, so they were the first to join the Masterharper Robinton and Mastersmith Fandarel. Lessa and F'lar slid onto the stools that Jaxom and Journeyman Harper Piemur vacated for them. Piemur frowned at his mate, Mastersmith Jancis, when she started to get down and gestured to Breide, standing gawking in the doorway, to bring more seating. When F'nor, the Benden Wingleader, came, he sat on the floor, where he had to crane his neck to see the screen, though he quickly became too engrossed in the history to notice any discomfort. Room was made in the small, crowded chamber for the Lord Holders, Groghe of Fort, Asgenar of Lemos, and Larad of Telgar. By then, Jaxom had been pushed back to the doorway and politely but firmly refused entry to anyone else.

Subtly the Aivas increased its volume so that the tale was audible to all those in the corridor. No one seemed to mind the stifling closeness of room and corridor, though matters improved when someone considerately passed around water and redfruit juice and, later, meatrolls. Someone also had the foresight to open as many of the windows in the building as possible, thus circulating some air down the corridor, though little enough reached the Aivas chamber.