At first, this makes it seem an easily manageable approach: an assortment of different topics and ideas, brought together in an essay. It seems easy, and this ease makes it appealing. However, it isn’t this simple. Every method of organization relies on having distinct topics or ideas because every paragraph and even groups of paragraphs should be distinct: a paragraph is a shift in topic or idea. Methods of Organization give us ways to structure and order the topics.
What, then, is Thematic organization?
Every other method organization gives you a way to distinguish each section or paragraph of an essay and a logical way to move from paragraph to paragraph. Graduated methods create hierarchies based on specificity, familiarity, or importance, while Sequential methods establish chronologies and trace ideas and concepts through time, and Comparative methods set the different topics in contrast to one another.
Thematic, however, gives a way to distinguish, but doesn’t give that logical progression.
Organizing Thematically involves using a theme appropriate for the essay as the governing mechanic to determine how everything is structured. The theme becomes the principle that logically brings the distinct topics together. This will then impact the topics themselves, with the theme running through the entire piece, impacting every decision you make. In other words, you need to find your own logic because the method itself doesn't supply it: it just reminds you that you need something to hang everything on, unlike the other methods of organization which give you the logic themselves.
It is possible for an essay to have multiple themes, just as fiction does, but to equate a theme with a paragraph is where the danger comes in. Too often disjointed, tangential essays are excused as being “thematic”, making Thematic Organization the refuge of the poorly organized: clusters of paragraphs placed together because they have to go somewhere, but without much attention given to why they are there. Most times a student proposes a Thematically organized essay or outline, they present either a disorganized mess or they haven't looked close enough to find a better way. Instead, themes should run across paragraphs, the length of broader sections and the essay as a whole, whether there’s only one theme or several. If you have a new organizational theme for every paragraph, then you don’t have an organized essay.
How then do we organize Thematically? Where are the examples? Because every use of Thematic organization will have a different theme, each will require a different approach and execution. The closest thing to such a general prescription for Thematic is to say every one will be different. Every combination of essay topic and organizational theme will yield a new situation, requiring its own organization.