Cumulative Knowledge

Cumulative knowledge is the enterprise of each generation standing on the shoulders of the previous one — evaluating, correcting, and extending prior work with confidence that the foundations will hold. It is not the natural state of intellectual life. Before the printing press, cumulative knowledge was structurally impossible at scale. Texts were too fluid (scribal errors accumulated across generations of copying), too localized (versions in different regions diverged), and too fragile (a fire in one library destroyed what might be the only copy of a work) to serve as stable foundations. Each generation of scholars faced the real possibility that the works they depended on might not survive to the next generation. Print changed this with the combination of fixity, dissemination, and preservation — making cumulative inquiry structurally possible for the first time, and thereby creating the conditions for modern science.