Structure and flow
A piece can have clear sentences and still lose the reader if the ideas are in the wrong order or do not connect. Structure is the skeleton; flow is how smoothly the reader moves along it. Both are decided above the sentence level.
Method
- Choose the organizing principle for the piece's job. Chronological (a story, a process), logical (an argument building to a conclusion), priority (most important first, for busy readers; see exec-one-pager), or problem-solution. Pick one deliberately; a piece that switches principles mid-way disorients.
- Outline before or during, and fix structure there. Get the order of sections right when they are cheap to move (an outline), not after they are polished prose (see content-outline, editing-and-revision's first pass). Each section should have one job and follow naturally from the last.
- Give each paragraph one idea and a clear topic sentence. The first sentence signals what the paragraph is about; the rest supports it. A paragraph covering three ideas should be three paragraphs. Readers skim topic sentences, so make them carry the through-line.
- Connect with transitions, not just proximity. Show the reader the relationship between ideas: "but", "so", "for example", "in contrast". Two true sentences side by side with no connective leaves the reader to guess the link. Transitions are the handrail through the argument.
- Signpost in longer pieces. Headings, a brief "here is where we are going" up front, and occasional "so far / next" markers let the reader keep their place. Structure the reader can see beats structure they have to reconstruct (see docs-information-architecture for documents).
- Test the flow by reading only the first line of each paragraph. If that skim tells a coherent story, the structure holds. If it jumps or repeats, the order or the topic sentences need work.
Boundaries
- Structure serves the reader and the content, not a template; force-fitting a piece into a rigid five-paragraph mold can hurt as much as no structure.
- Flow at the sentence level (rhythm, transitions) is a finishing concern; get the big-block order right first (see editing-and-revision).
- Different formats have their own structural conventions (a design doc, a news article's inverted pyramid, a story's arc); learn the form's shape rather than importing one blindly (see press-release, design-doc, narrative-craft).