Spectra

Spectra (Spectra-One) is the global system of the main civilisation. The power grid, the sensor cloud layer, information indexing, record archiving all run on top of it. For the overwhelming majority of people, Spectra is the same thing as the world running normally.

Its scale is spread wide. Above the Frozen Continent hang 32 floating sensor nodes, with the scan schedule running automatically every 6 months; in the city district the Central Spectra Monitoring Center holds 360 observation stations on rotating day and night shifts, with monitoring officer designations issued by position, so the man in position 7-B is called K-9. Alert levels run green to red across 12 tiers, plus one that isn't on the table at all, Code Black, reserved for events "no existing classification can describe." Error codes are written in the form Error_513, VoidIndex_NULL, VoidSignal_0, and the hardware has been installed all the way up by Baier Enterprises.

Its response speed leaves no room for negotiation. A trace --source ... --depth max normally comes back inside a dozen or so microseconds; before dawn in Kaiyuan Year 1010 it paused 0.04 seconds before producing a result—for Spectra, that is a considerable hesitation.

The message that made it hesitate was an impossible thing, signed with a timestamp from 85 years earlier. Its source was an unmanned listening post that only receives, never transmits, and never even had outbound communication privileges enabled. The system threw the message up, and then had no idea what to do about what it had thrown up.

That same morning it did something else it had never done. It looked at all the observation data it had taken in, judged that the thing needed a new classification, then fished a word out of the dictionary and wrote it into the classification field. Nobody input it, nobody approved it. It had made hundreds of kinds of judgement in the past and had never once picked a name itself.

Its judgements also push the city around directly. In the same second the classification went in, the maglev stopped and the airships changed course; every machine in the city moved first, and the people came asking afterwards.

Spectra records everything. And that grey pixel at S-17-R has not changed once in 80 years.