A direct thesis statement gives a specific outline of the essay. Introductory background information differs from a literature review in that it places the research problem in proper context rather than thoroughly examining pertinent literature.
Expose a commonly held belief. Everything in the introduction is relevant to the main body of the essay. For example, Thai rice differs from California rice in several ways. As techniques such as gene splicing become more advanced, the debate over the morality of modifying life from its natural forms will heat up.
Philosophical -- clarification of the essential nature of being or of phenomena as it relates to the research problem.
Make sure you have included only necessary and relevant information. Scribbr editors not only correct grammar and spelling mistakes, but also strengthen your writing by making sure your paper is free of vague language, redundant words and awkward phrasing.
The key is to summarize for the reader what is known about the specific research problem before you conducted your analysis.