Questions about Narrative in Physical Computing

Things about actuators , sensors and calibration is there a natural order when scripting a story telling in physical computing?
Actuators are designed to activate not to inactivate

As per definition of actuators in wikipedia : “An actuator is a component of a machine that is responsible for moving and controlling a mechanism or system, for example by opening a valve. In simple terms, it is a “mover”.”

So among the electronics artefacts, I have the actuator, the passive and the one which could be moved by the actuator. stop moving when the actuator is not on anymore . stop moving is not a positive form, form of resistance of non moving
Odd that it is more easy to activate than to inactivate a servo… It looks less easy than you think .The way things are built with motors is that their actuators are there to make them move , but not make them stop …