I do wish we'd had a chance to see how well it worked.
Not to say that there wouldn't have been bad economic outcomes here otherwise, but it's clear that they were going up against the CIA.
https://en.wikipedia.org/wiki/United_States_intervention_in_...
In fact, the system design behind Cybersyn is closer to decentralized systems like Toyota Production System rather than centralized approaches exemplified in typical American corporations.
The whole point of cybersyn was that control loops were supposed t be established at multiple levels from bottom up, with higher levels interacting only when required for example to handle cooperation between multiple entities.
Cybersyn being strangled in the crib by the CIA isn't really good evidence in either direction.
The US made sure that doubt was never cleared. Shame, it looked decades ahead of its time, essentially internet + machine learning to dynamically allocate resources and diagnose problems. Essentially what amazon and other big enterprises do today, so... Plus it had a socialist bent, aiming to include workers in that real time decision making process.
But it has lots and lots of price information to go on, both prices people are willing to pay for various goods at various times & places, and prices at which suppliers stop selling. That's what command economies didn't have, and it's why they didn't work. That was the criticism.
(Monetary National Income Analogue Computer) also known as the Phillips Hydraulic Computer