each part of the system works on another part, always in the same sequence and without feedback. this makes them predictable. (ex. the workings of a clock)
each part of the system works on another part, always in the same sequence and without feedback. this makes them predictable. (ex. the workings of a clock)
-well behaved: small change in input goes to a small change in output -best modeled by traditional math  -a convenient fiction