- You can't predict the future so accurately because unavoidable measurement error is often more than enough to decide between radically different results.
- You can't "Interpolate" entirely new, precise information from data that wouldn't be part of the same equation. You physically cannot calculate someone's face from an image of the back of their head.
I've picked more than enough nits here, but the point is, something annoys me about this story every few paragraphs, making it very hard to enjoy.
The author (or, even more improbably the computer programming narrator) is also biased against nerds and our ability to communicate or know things about the real world. Given the readership of Analog, this seems like a mistake. It also stinks of bad 80's movie cliche.
All told, this is an obnoxious computer-induced-end-of-world story which exists purely to say that carpenters are smarter than scientists and policy wonks. Thankfully, the carpenter-wisdom doesn't save the day, but it does wrap up the story with an over-obvious moral. The only redeeming factor is that the last couple pages are oddly gripping despite my annoyances.
2 magical computer algorithms out of 5.