In the course of the essay, your thesis should have been subjected to scrutiny that enables us to emerge with a deeper understanding of the subject. The conclusion should show how you have proven the thesis, illustrating our progress, including any caveats or qualifications that some of the antitheses may have brought to light. It is also a good idea to show why this thesis is important, and speculate on some of its possible implications. These speculations may be followed by a call for further research of the new issues your thesis raises. A conclusion such as this leaves the readers hungering for more, as they are not only persuaded of the validity of your thesis, but also tantalized with new possibilities. This style of conclusion allows for much more creative expression, as there is more room for speculative opinion.
While the 5-paragraph structure gives you a helpful formula to work with, it’s only one among many valid options, and its suitability will depend on other factors like the length and complexity of your essay. If you’re writing a paper that’s more than 3 or 4 pages long, it should be more than 5 paragraphs. In most cases, the structure of a longer essay will be similar to that of the 5-paragraph essay, with an introduction, a conclusion and body paragraphs performing the same basic functions—only the number of body paragraphs will increase. The length of the paragraphs may also increase slightly in proportion to the length of the essay.