Overview of the Models

This is an interesting introduction to eight different models of analyzing conflict. There were just brief explanations, so I am assuming that the in-depth chapters give more details about what all of the lines/etc in each model mean. Here are some of my thoughts on the models:
Model #1 (circle of conflict) : I find it interesting that they choose a circle to represent the five categories of causes/drivers of conflict in equal proportion to the interests of the resolution. Why are they all equally spaced, and should the interests piece of the pie even be in this model; it seems a bit out of place.
Model #2: I think it is interesting how they are looking at different strategies, but there is not much to this model in this introduction.
Model #3: Do you think more conflicts happen from disrupting norms than disrupting boundaries? How are they defining boundaries—are norms included?
Model #4: I think it is interesting and very applicable that they put Power as the costliest way to approach conflict: I think it is harder to negotiate power than interests.
Model #5: This seems the most complex, and I think a more in-depth description would be helpful.
Model #7: I’m not sure what those arrows symbolize, but this looks like something we discussed in intro to conflict resolution
Model #8: I think that this is visually the easiest to understand, but I am a math major and am very accustomed to reading graphs.