The difficulty of publishing papers for liberal arts doctors varies from person to person, but generally speaking, compared with science and engineering doctors, liberal arts doctors may face more challenges in publishing papers. Here are some possible reasons:

1. research methods: liberal arts research usually involves the interpretation and analysis of texts, historical materials or human behavior, and these research methods may not be as easy to quantify and verify as science and engineering experiments or mathematical modeling. Therefore, a doctor of literature may need to spend more time and energy writing papers to ensure the reliability and effectiveness of research.

2. Academic resources: Compared with the field of science and engineering, there may be relatively few academic resources in the field of liberal arts. This may make it difficult for liberal arts doctors to find suitable research topics, data sources and references.

3. Publishing pressure: Due to the limited number of academic journals in the liberal arts field, the competition may be more intense. In addition, some top journals may prefer to publish research results with wide influence, not just breakthroughs in a certain subdivision. This may lead to greater pressure on doctoral students of arts to publish papers.

4. Academic evaluation system: In some countries and regions, the academic evaluation system of liberal arts doctors may pay more attention to the quantity rather than the quality of papers. This may lead to the loss of paper quality in pursuit of the number of publications, thus affecting the influence of its research results.

5. Interdisciplinary cooperation: liberal arts research often requires interdisciplinary knowledge and methods, which may lead to the challenge of communication and collaboration when doctors of liberal arts cooperate with experts in different fields.

In a word, the difficulty of writing articles for liberal arts doctors may be influenced by many factors, including research methods, academic resources, publishing pressure, academic evaluation system, interdisciplinary cooperation and so on. However, through efforts to improve research ability, broaden academic horizons and strengthen interdisciplinary cooperation, doctors of liberal arts can still make remarkable achievements in academia.