A criticism of analog computers is they aren't general purpose but on road to true quantum computing analog offers benefits over current digital binary paradigm of on/off switches. And digital computers aren't truly "general purpose" either: my phone can't drive my car or operate my washing machine (directly) and can only show (on it's screen) what is input vis known peripherals and programmed by its OS/app. So it may be time to take another look at next generation/evolution of early primitive analog computing machines (i.e. Babbage, Turing) and fault tolerance (rheostats fail and can't be controlled precisely, which may be a benefit for things like encryption (rounding error may be a plus).