This paper presents a narrative about the historical development of the concept of a macromolecule. It does so to illustrate how the history of science might be used as a pedagogical tool to teach science, particularly to non-majors. To help with this purpose, the paper includes extensive quotations to give a sense of the tone of the debate and contains pedagogical commentaries on the kinds of questions that the history of science allows us to consider. In addition, I argue that knowledge of the history of science might help combat an attitude that I have termed "presentism". Examples are given.
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