The second way one uses the word "thesis" is in reference to a major paper that one writes as a capstone for his or her bachelor's or master's degree. Whereas term papers are projects that last one term, theses are projects that last several terms. Theses are usually much, much longer than term papers, often stretching past two hundred pages. Perhaps counterintuitively, however, theses often cover much more specialized topics than term papers. For example, one may write a term paper on Herman Melville for a literature survey course, but one would be much more likely to write a thesis on homosexual symbolism in Herman Melville's Moby Dick or on some other extremely specific aspect of one of Melville's novels. In fact, one could write an entire thesis on a single paragraph of Moby Dick . The goal of a thesis is to expound fully one's opinion on a given subject and to confront and exhaust all the opposition to that opinion. Therefore, one usually specializes his or her thesis topic almost to the point of absurdity.
5. Revising your thesis
Notice that in the sentence above we used the phrase "a thesis statement" rather than "your thesis statement." This is because, as you examine your thesis statement through the Aristotelian method, you may discover that you were wrong. At this point, you should either revise your thesis or choose another subject and begin again. Revising your opinion in light of convincing evidence is the beginning of wisdom. Besides, even if it is possible to proceed with the essay as you first envisioned it, you will find it more difficult to defend a thesis you have previously discredited in your notes.
Twenty-four-year-old Lee Harvey Oswald, known to have Communist sympathies, was arrested for the killing but was shot and fatally wounded two days later by local nightclub owner Jack Ruby while being led to jail. Almost immediately, alternative theories of Kennedy’s assassination emerged–including conspiracies run by the KGB, the Mafia and the . military-industrial complex, among others. A presidential commission led by Chief Justice Earl Warren concluded that Oswald had acted alone, but speculation and debate over the assassination has persisted.