The reason why Spanish picaresque novels are so revealing and ironic may be related to the following factors: 1. Social reality: The social reality of Spain may be related to the problem of tramps, such as poverty, employment, social problems, etc. These problems may cause tramps to become the fringe of society and be in danger. Tramp novels could reflect these problems by describing the lives and experiences of tramps. 2. Human nature exposure: Tramp novels may reveal the weaknesses and flaws of human nature such as greed, laziness, irresponsibility, etc. These characteristics may make the tramp a symbol of society, reflecting the nature and problems of human nature. 3. Cultural factors: Spanish culture may also be related to tramp novels, such as Spanish vagrant culture, social class culture, etc. Tramp novels could reflect the Spanish culture and social background by describing the lives and experiences of tramps. 4. Literature style: Spanish tramp novels may have unique literary styles such as realism, satire, etc. This literary style may provide the tramp novel with the meaning of exposure and irony, and at the same time, it may make the readers feel the truth and profundity of the tramp novel. The reason why the Spanish picaresque novels are revealing and satirizing may be related to social reality, human nature exposure, cultural factors, literary style and other factors.