2. (Please summarize from the following text) 1. Definition and characteristics of literary methods.

Literature method is a method to collect and analyze literature according to a certain investigation purpose, so as to obtain the required information.

Literary methods have the following outstanding characteristics: first, time and space. The method of literature can transcend the limitation of time and space. Study objects that can't be approached personally. Second, indirectness. Using the method of literature, there is no direct contact with the respondents, and there is no interpersonal problem with the respondents during the investigation, and it will not be interfered by the respondents' reactive psychology or behavior. Third, high efficiency and low cost.

2. Limitations of literature method.

The limitations of literary methods: First, literature lacks vividness and intuition. The main information obtained by literature investigation is written materials, not things on paper, but second-hand materials. Second, documents cannot be freely obtained. Because many files are not public, some files cannot be obtained at will. Third, it is difficult to identify the untrue components of the document. The content of any literature is limited by certain times and social conditions, and is restricted by the author's personal quality. Therefore, documents and information are not all reliable. Fourth, literature lags behind the objective reality. Because any literature is a record of past social phenomena, and social life is constantly developing and changing.

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