Now, if you've ever played with how a sys-dyn model is built... timing your delays is crucial. "Real-time control" is a super cool idea, but there are stochastic deferrals between actions by policy-makers or decentralized agents and their systemic consequences. Mis-time these and you'll just be inducing cycles.
That's a reason why modern economic planning is all based on watching response signals. We watch inflation and unemployment not because the relatively low thresholds that trigger action are catastrophic, but because inflation is a symptom of an overheated economy. We can't track demand and supply at the level of every commodity, and if we did, we wouldn't know how capacity expansion relates to effective availability to the consumer (this is a mistake countries that try to deal with hyperinflation with heavy intervention keep making, with the inevitable shortages in supply).
TL;DR: Zomg tech