Having worked on SCADA software in the past, I find the evolution of the control room UX fascinating.

You can see in these pictures, where every input and output is a real physical thing, just how much density of information was required for Operators to process. As we moved to computer screens representing the same, those original screens would represent these control room layouts faithfully (and you can understand why, training an operator must have taken ages; retraining is not palatable).

Over time, multiple “control rooms” coalesced into one room of computer screens with fewer operators and yet an exponential increase in information to process. So how on earth can a person keep track of it all? Intervene promptly when things go wrong? Determine what needs attention right now vs something that can wait? As a problem space, the seemingly simply world of designing SCADA UI is quite fascinating.