While you generally want to move from the known to the new, from the thesis to its illustration or restriction, you sometimes want to violate this pattern. Educated readers in particular can be bored by texts that always present information in the same way.
Regardless of whether a paragraph is deductively or inductively structured, readers can generally follow the logic of a discussion better when a paragraph is unified by a single purpose. Paragraphs that lack a central idea and that wander from subject to subject are apt to confuse readers, making them wonder what they should pay attention to and why.
As much as any of the above guidelines, you should consider the media and genre where your text will appear. For as much as paragraphs are shaped by the ideas being expressed, they are also influenced by the genre of the discourse.
Readers also expect paragraphs to relate to each other as well as to the overall purpose of a text. Establishing transitional sentences for paragraphs can be one of the most difficult challenges you face as a writer because you need to guide the reader with a light hand. When you are too blatant about your transitions, your readers may feel patronized.
Understand how to organize information in paragraphs so readers can scan your work and better follow your reasoning.
Unlike punctuation, which can be subjected to specific rules, no ironclad guidelines exist for shaping paragraphs. If you presented a text without paragraphs to a dozen writing instructors and asked them to break the document into logical sections, chances are that you would receive different opinions about the best places to break the paragraph. In part, where paragraphs should be placed is a stylistic choice. Some writers prefer longer paragraphs that compare and contrast several related ideas, whereas others opt for a more linear structure, delineating each subject on a one-point-per-paragraph basis. Newspaper articles or documents published on the Internet tend to have short paragraphs, even one-sentence paragraphs.