number π is therefore well-determined, with absolutely nothing random about it. At the same time, no matter how far you go, the next digit cannot be predicted from what you have already.
Of course, if you were to discover the first thousand or ten thousand digits of π, to any number base, in a signal received from space, that would be another matter. It would provide proof, without doubt and without the need for any other information, that an alien intelligence was broadcasting to the universe.
Milly had known all that, long before she applied for a position with Project Argus. It was also a safe bet that the Argus computers, billions of times faster and more accurate than any human, were screening for untold millions of digit sequences drawn from pure mathematics and physics.
So what did this leave for humans to do? Exactly what Milly was doing now: using the human ability, so far unmatched by any machine, to see patterns .
Every morning, the mill produced a variable number of signals with some element of strangeness. Every morning, eighteen humans in their separate cubicles were provided a quota of data sets for individual examination. No one in the analysis group knew how many signals the mill produced on any particular day for human inspection, and all assumed that on some occasions two or more people would be given the same data. In principle no data set was more than one day old, but Hannah Krauss had told Milly that new arrivals would often in their first weeks be given an old anomaly, to see what they made of it. Jack Beston calibrated and compared the quality of people as well as signals.
He was more than an Ogre, he was a paranoid Ogre. Milly and her fellow-workers at the Argus Station could eat together if they wished and interact socially as much as they liked. What they were not supposed to do, ever, was compare notes about their work. Anomalies were not to be advertised, nor were they a subject for group discussion. They were to be reported directly to Jack Beston.
The data for individual analysis were divided into what on the L-4 station were known as “cells.” As Milly pulled in the first cell of the day, she reflected that she too might as well be in a cell. Worse than that, she was in solitary confinement. The cubicle to her left was occupied by a mournful-faced woman in her middle fifties who apparently had no other existence than work. Lota Danes was never in the dining area, and no matter how early Milly came to her cubicle, the door of the neighboring cubicle was always closed and the red sign outside showed that it was occupied. The hyperactive man who sat on Milly’s other side was at the other extreme of behavior. Simon Bitters kept random hours, popped in and out of his cubicle all the time, stuck his head now and again into Milly’s own little partition, placed his right index finger on the end of his nose, then ducked out again without a word. He apparently spent the whole of his working days wandering the station. Milly wondered how he ever fulfilled his daily quota. But apparently he did, otherwise Jack Beston would have shredded him at the weekly review meetings.
“You’ll be a long way from home,” her stepfather had said, just before Milly left Ganymede. “Make friends there, so you won’t feel lonely.”
Sure. But how, with eccentrics like these?
Maybe Milly was one herself. This wasn’t what she had expected when she signed up to come to the L-4 location and the Argus Project, but Hannah Krauss’s warning after her first couple of weeks in some ways matched her stepfather’s. “The work here is challenging and interesting, but it’s lonely. Try to make friends, and find activities outside your work. Do you know the occupational hazards of mathematicians, logicians, and cryptanalysts?”
“Depression?”
“Depression, yes. Also insanity, paranoia, and suicide. And isolation increases the odds.”
Now they warned you, when you were already here. Milly examined the