In control theory there’s a concept called bang-bang control. A control strategy where an actuator is either at max output or off. Sometimes this is due to an on/off type actuator like a rocket without a controllable throttle. Other times it’s just to make control easier.
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Sometimes it seems like societies are governed in bang-bang ways as well, using mechanisms that are at limits like “rich people richer policy set” and “poor people poorer policy set”.
Non-bang-bang is stuff like middle class policy making. This is rare but huge impact when used
