When we add structure, there’s a tension between chronology and theme. McPhee says that chronology usually wins.

Developing a structure is seldom that simple. Almost always there is considerable tension between chronology and theme, and chronology traditionally wins. The narrative wants to move from point to point through time, while topics that have arisen now and again across someone’s life cry out to be collected. They want to draw themselves together in a single body, in the way that salt does underground. But chronology usually dominates. As themes prove inconvenient, you find some way to tuck them in. (View Highlight)