The exact number of teleprinters used hasn't been confirmed. The most cited number being 500. While other sources suggest it could have been much lower. Using teleprinters each factory would send quantified indices of production processes such as raw material input, production output, number of absentees, etc. These indices would later feed a statistical analysis program that, running on a mainframe computer in Santiago, would make short-term predictions about the factories' performance and suggest necessary adjustments, which, after discussion in an operations room, would be fed back to the factories. This process occurred at 4 levels: firm, branch, sector, and total. A fundamental phase of the project was to quantify the production processes in the factories. This began with operational research (OR) engineers visiting the factories and modeling their production flows using a technique that Beer and the local team called "quantified flowcharting". It consisted of drawing a flowchart of the entire production process of a given factory, focusing on the "bottlenecks" of such a process. The connections from one point in the process to another had to be quantified in order to find those bottlenecks. This was a time-consuming process, for which only one OR engineer was assigned to model a given factory. This is likely the reason why, at the end of the project, only about twenty factories were modeled and connected to the transmission and processing system. Once a factory was modeled, it was necessary to collect indices of processes on a daily basis. The "quantified flowcharting" technique used by the project team explicitly required the modelers to rely on the factory operators' knowledge of their own relationships to their machines to generate these indices. This is reminiscent of earlier bottom-up cybernetic processes, such as those signaled by Pasquinelli in his article "Italian Operaismo and the Information Machine". The collected indexes were then recorded on a paper form and given to a typist secretary at the factory who, using an in-house teletype machine, sent these data to a traffic station, where the information was first checked for format accuracy.
Algedonic feedback improved system adaptability and viability. If one level of control did not remedy a problem in a certain interval, the higher level was notified. The results were discussed in the operations room and a top-level plan was made. The network of telex machines, called 'Cybernet', was the first operational component of Cybersyn, and the only one regularly used by the Allende government. Cybersyn first ran on an
IBM 360/50, but later was transferred to a less heavily used
Burroughs 3500 mainframe. The
tulip chairs were similar in style to those in
Star Trek, but the designers claimed no science fiction influence. The project is described in some detail in the second edition of Stafford Beer's books
Brain of the Firm and
Platform for Change. The latter book includes proposals for social innovations such as having representatives of diverse 'stakeholder' groups into the control center. A related development known as Project Cyberfolk, which Beer envisioned as an extension of Cybersyn but never realized, would allow citizens to send real-time feedback to the government about their level of satisfaction or dissatisfaction with policies announced on television. == Implementation ==