A thesis statement should: 1) Tell the reader what the writing is about 2) Indicate the writer's attitude about the subject 3) Make a contract that by the end, readers will understand the writer's view of the subject An effective thesis is restricted, unified, precise, and not a sentence fragment, question, or tentative statement. It does not include phrases like "I think" or "I believe." A working thesis exhibits the author, genre, title, topic, and evaluation while a final thesis fits into the introduction and may be revised as the essay progresses.