Academic essay readers are like jury members: they want to know what the essay is arguing and how the writer intends to make the case before they read any more. The reader should consider your paper after reading your thesis statement.
A good thesis cannot be replied to simply with "yes" or "no." A thesis is neither a subject, nor a fact, nor an opinion.
There are two parts to a strong thesis statement. It should state what you intend to argue and "telegraph" how you intend to argue—that is, what specific evidence for your argument will be placed where in your essay.
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Review the primary sources first. Conflict, interest, uncertainty, controversy, and complexity are the things to include. Is there some inconsistency in the author's work? Is there an argument that is made and then reversed? What are the ramifications of the author's point on a deeper level? You will be on your way to creating a working thesis to answer why to one or more of these questions or related questions.
Make a note of it. Nothing is more frustrating than having a brilliant thesis concept and then forgetting about it when you lose focus. You will be forced to think objectively and concisely about your thesis if you write it down. You will not be able to compose a final-draft version of your thesis the first time you try, but by writing down what you have, you will get yourself on the right track.
The thesis statement must be prominent. The end of an introductory paragraph is a perfect place for your thesis argument, particularly in shorter (5-15 page) essays. Since readers are accustomed to finding theses there, they will naturally pay more attention to the last sentence of your introduction. While not mandatory in all academic essays, it is a good rule of thumb to follow.
Be aware of potential counterarguments. Once you have come up with a working thesis, consider what might be said against it. This will assist you in refining your thesis and prompting you to consider the points you will need to counter later in your essay. There is a counterargument to any point. If yours does not, it is not an argument—it may be a fact or an opinion, but it is not one.
A thesis statement should be crisp but specific. Avoid jargon and abstractions that are overused. "Communism in Eastern Europe collapsed because the ruling elite failed to resolve the people's economic problems" is stronger than "Communism collapsed due to social dissatisfaction."
The thesis statement was originally intended to help you concentrate, restrict your content, and determine the intent of your paper.
On the other hand, the thesis argument becomes a reference for your reader until your paper is done. It tells the reader what you have found about your subject and how you came to your conclusion based on the facts. It keeps the reader on trackable to comprehend an explanation.