从语言表述上看,《指物论》与以对辩体写成的《坚白论》、《白马论》和《通变论》三篇,写作风格迥异,并没有表现出主客双方之间的对诤风格。从研究内容上说,它明显是针对《墨经》的指物观而作,核心在于阐明名物关系。因此,《指物论》并不是对辩体。 From the linguistic point of view, the writing style is different between the “theory of the fingernails” and the “rigid theory”, “the theory of the white horse” and “the theory of the Tongbian” written by the opponent. It does not show the difference between the two subjects诤 style. From the research content, it is obvious that it is directed at the concept of the meridians in the Book of Migrants. The core of the book is to clarify the relationship between the names. Therefore, the “theory of the fingernails” is not a justification.