Hermione Granger: "You're saying it wrong. It's Wing-gar-dium Levi-o-sa,
make the 'gar' nice and long."
"The Levitation Charm was invented in 1544 by warlock Jarleth Hobart who
mistakenly believed that he had at last succeeded in doing what wizardkind
had so far failed to do, and learnt to fly."

http://www.stopthecrime.net/docs/SILENT%20WEAPONS%20for%20QUIET%20WARS.pdf

The linked .pdf describes three systems: a model of the economy; methods of
determining the impulse response of economic sub-systems; and an outline of
methods for individual profiling and control. The manual was "discovered" in
1986, and was supposedly written in 1979. It is almost certainly a hoax, and
offers a means of micromanaging the American economy down to the level of
the individual.
That said, the economic model contains certain features that have only recently
appeared in economics papers, hence if it were implemented, it may be at least
as good as other models currently in play. The attraction of the document,
however, is that it offers the reader a measure of omnipotence, at least in
the short run, but unfortunately, where a mistaken belief in one's ability to
fly will result in a swift physical readjustment to the reality of the flyer,
economics offers the possibility of having others pay for one's mistakes. 
In that sense, it could be said that the system is likely to perform exactly
as designed.

I'm posting this here because it may have some relevance to MA's modelling.
If MA had added artificial intelligence to these models, he may have something
that works, at minimum,  in the short run.