Metaphors: Midwives of conceptual change in science

The American philosopher of science Kuhn, in the 1980s, studied the scientific revolution in depth from a unique perspective of the philosophy of language, seeing it as a change in the language of science, especially in scientific vocabularies or dictionaries. In this process of transformation, metaphors, analogies, and models play the role of midwives in the birth of new concepts. Based on the analysis of Kuhn's relevant insights, this paper identifies the nature and use of metaphor, analogy and model as well as the similarities and differences among them, arguing that analogy and model are special cases of metaphor and can be fully encompassed within the category of metaphor. Finally, the ontological, epistemological, methodological, linguistic, and linguistic philosophical perspectives are explored as to why metaphor is indispensable in scientific cognition and scientific revolution.