"Brain of the Firm", Stafford Beer, 1986, ISBN 0 471 27687 1
*
* Twenty-four hours a day, messages were flowing in non-stop. This instantly
* posed an enormous problem in handling the inundation of information.
*
* Two of the senior cyberneticians organized a filtration system.

The feedback was not simply machine throughput rates, but also---via
the central computer---a system 'through which anyone could consult
anyone else'.

I used keyword monitoring to filter "information" from "noise" in
Salomon's HUGE email traffic. What I did, of course, was small potatoes;
what Stafford Beer did was a serious cybernetic attempt to control an
entire nation's economy.

In order for him to do that, he needed to set
up a (cybernetic) monitoring infrastructure.

The nation's banks, factories and industrial companies.

It would have given Allende maximum control over the nations
industrial infrastructure, real-time monitoring of everything.

Everything had a computer monitoring it.