The chapter about differences is very important. You don’t think about it at first, but if everything was the same, there would be nothing to hold anyones interest. They put a lot of emphasis about simplicity in the first chapters, but here they explain that simplicity is nothing without complexity because it too becomes boring. There needs to be a pattern and balance between the two so that simplicity will ad relieve and complexity will ad interest. Context can decide where attention gets paid. If there is blankness, the areas of substance get more attention. When there is not something to fixate one, attention is paid to everything else that should be in the background. If all the small conditions are favorable, this can lead to a very good experience, or a very bad one. There is a place between complexity and simplicity that context connects.
Ashley Zych