The shortcomings of self-evaluation can be written from the following points: insufficient literature research, inaccurate data analysis, poor paper structure and organization, imperfect methods and research design, and unclear problems and research significance.

1. Insufficient literature research: There may be no comprehensive investigation of relevant literature, or the latest and most authoritative literature cannot be found, resulting in unsatisfactory opinions and conclusions.

2. Inaccurate data analysis: The data may not be carefully checked and analyzed to correctly support the research hypothesis. Errors in data analysis may lead to inaccurate conclusions.

3. The structure and organization of the paper are not good: the paper may not be written according to the requirements of the structure and organization of the paper, or the format and style of the paper are problematic, which makes the paper difficult to understand or unclear.

4. Imperfect methods and research design: The best design methods and statistical analysis methods may not be chosen to support the research hypothesis. Imperfect methods and research design will affect the reliability of research results.

5. The questions and research significance raised in the paper are not clear: the research questions and research significance may not be clearly described, which leads readers to be unclear about the purpose and significance of the research.

The usefulness of the paper

Thesis is a common and basic form of academic literature engaged in academic research, which has the following purposes:

1. Absorb new knowledge: Writing a paper can make the author think deeply and study problems in a certain field, thus absorbing new knowledge.

2. Publishing results: Submitting and publishing papers is an important way for scholars to display research results. The publication of the paper can increase the author's academic popularity and reputation.

3. Perfecting academic experience: Writing a thesis requires the author to comprehensively use a variety of research methods and analytical tools, which is conducive to the promotion and perfection of experience.

4. Promote academic development: As the basic form of academic research, papers can promote the development of academic research and promote the progress and development of disciplines and majors.

5. Obtaining a degree or professional qualification: Thesis is one of the necessary conditions for obtaining a bachelor's degree, a master's degree, a doctoral degree and some professional qualifications.