Look in real life. All this is made by observation of how events unfold in real life. There are single ways all this moves through. I won't go into specifics, as I said I avoid writing about WWG now, but will only say that all this is made observing real life changes. Then often it was passed through many generations until it has lost much meaning today, for different reasons.
While at other places it seems its provided by steps, so its easier for the practitioner to get accustomed to see something then that is expanded. Since we have different authors providing different steps, again becomes important to observe for yourself and trim and expand the rules where that is vital.
If you want it to work, you have to observe how that works in real life. And it isn't difficult. You have someone very enthusiastic that moves in a way that that enthusiasm is lost now. Will they interact with their original view?Will they interact with other changes in the situation and people here?More importantly if they dont' interact from their changes position, then why is that?As without understanding that the rule is more a hindrance then help.
For any single situation where that type of change is present it has to have the same effect and movement. So you only need to see it once then maybe adjust a few times if there are exceptions and often there are, but just few.
There is a single answer to all that and if you spend some time observing you will find it.
Some years ago we have been through many of these around the forums, though, but the essence is the same for me - wise to observe real life events to make good rules. Then use whatever you arrive at. The base stuff is same, as well, so just about details on interactions.
