The document discusses the key components of an effective thesis statement, including that it is a single, specific claim that an essay supports. A good thesis statement includes a topic, precise opinion, and reasoning. It tells the reader where the essay is going and how the writer plans to get there. A thesis statement is always arguable and consists of three parts: the subject or topic, the writer's opinion on that topic, and a blueprint of at least three reasons or pieces of evidence to back up the opinion.