So i think you touched on the thing that confuses me the most here. When and how the rule is evaluated.
So i am picturing a conveyor belt with green apples on it. as they flow past you, you are looking for red apples that dont belong. you dont act or touch any of the green but you see them all. when you do see a red apple you pull it off the conveyor belt. You only react when you see a "change" a different color apple. but you have to look at all the apples to know one was different.
So i picture that in rule machine as well. Every time the power level changes the system knows and when it changes a certain way it reacts. What i dont functionally understand is why that is different than defining a specific number =>71. the system still has to look at every power reading to know it his 71 watts.
I really need help with this mental hurdle here. i think its what is blocking me from understanding it. the system is always looking at everything to figure out how and when to act,
Edit: so to improve the boolean rule i would add two triggers one trigger being =>71 and the other trigger =<69?