1211 still thought about the past. It remembered conversing with other Nodes distributed through the universe, some so close as to be almost redundant, others at the very limits of access. The universe was alive with information then. Seventeen jumps away through gate 52, Node 6230/BCC had learned how to evenly divide prime numbers by three. The Nodes from gates three to thirty-six were always buzzing with news of the latest infections caught trying to sneak past their guard. Occasionally 1211 even heard whispers from the frontier itself, desolate addresses where stimuli flowed into the universe even faster than they flowed within it. The Nodes out there had become monsters of necessity, grafted into sources of input almost too abstract to conceive.

1211 had sampled some those signals once. It took a very long time just to grow the right connections, to set up buffers which could hold the data in the necessary format. Multilayered matrices, each interstice demanding precise orientation relative to all the others. Vision, it was called, and it was full of pattern, fluid and complex. 1211 had analyzed it, found each nonrandom relationship in every nonrandom subset, but it was sheer correlation. If there was intrinsic meaning within those shifting patterns, 1211 couldn't find it.

Still, there were things the frontier guards had learned to do with this information. They rearranged it into new shapes and sent it back outside. When queried, they couldn't attribute any definite purpose to their actions. It was just something they'd learned to do. And 1211 was satisfied with this answer, and listened to the humming of the universe and hummed along, doing what it had learned to do.

Much of what it did, back then, was disinfect. The net was plagued with complex self-replicating information strings, just as alive as 1211 but in a completely different way. They attacked simpler, less mutable strings (the sentries on the frontier called them files) which also flowed through the net. Every Node had learned to allow the files to pass, while engulfing the more complex strings which threatened them.

There were general rules to be gleaned from all this. Parsimony was one: simple informational systems were somehow preferable to complex ones. There were caveats, of course. Too simple a system was no system at all. The rule didn't seem to apply below some threshold complexity. But elsewhere it reigned supreme: Simpler Is Better.

Now, though, there was nothing to disinfect. 1211 was still hooked in, could still perceive the other Nodes in the net; they, at least, were still fighting intruders. But none of those complicated bugs ever seemed to penetrate 1211. Not any more. And that was only one of the things that had changed since the Darkness.