Numerals, Cognition, and History
Insights from the history of numerical notation suggest that how humans write numbers is an active choice involving cognitive and social factors.
Over the past 5,000 years, more than 100 methods of numerical notation—distinct ways of writing numbers—have been developed and used by specific communities. Most of these are barely known today; where they are known, they are often derided as cognitively cumbersome and outdated. In Reckonings, Stephen Chrisomalis considers how humans past and present have used numerals, reinterpreting historical and archaeological representations of numerical notation and exploring the implications of why we write numbers with figures rather than words.
Chrisomalis shows that numeration is a social practice. He argues that written numerals are conceptual tools that are transformed to fit the perceived needs of their users, and that the sorts of cognitive processes that affect decision-making around numerical activity are complex and involve social factors. Drawing on the triple meaning of reckon—to think, to calculate, and to judge—as a framing device, Chrisomalis argues that the history of numeral systems is best considered as a cognitive history of language, writing, mathematics, and technology.
Chrisomalis offers seven interlinked essays that are both macro-historical and cross-cultural, with a particular focus, throughout, on Roman numerals. Countering the common narrative that Roman numerals are archaic and clumsy, Chrisomalis presents examples of Roman numeral use in classical, medieval, and early modern contexts. Readers will think more deeply about written numbers as a cognitive technology that each of us uses every single day, and will question the assumption that whatever happened historically was destined to have happened, leading inevitably to the present.
Hardcover$35.00 X ISBN: 9780262044639 264 pp. | 6 in x 9 in 54
For a fresh account of the hows and whys of evolving number systems over the past 5500 years and on into the future, here's a book by cognitive anthropologist Stephen Chrisomalis. His threefold approach in Reckonings is to examine number with respect to structure, purpose, and transience, and in doing so, he cautiously avoids overgeneralizing, ever mindful that the Latin maxim exceptio probat regulam ought to be translated as 'the exception probes the rule.' Thus, Chrisomalis habitually inserts curious richness into his narrative.
The Mathematical Intelligencer
Stephen Chrisomalis has written a compelling and thoroughly entertaining account of how numbers came to be used and represented. [... ] I strongly recommend this book for readers interested in the broad sweep of human history from an information lens. [... ] Reckonings serves as an enlightening example of how the fundamentals of information cannot be understood by a single discipline.
Information & Culture
In Reckonings linguistic anthropologist Stephen Chrisomalis takes his lay audience on a sweeping cross-cultural journey through the vast domain of ideas and principles underlying quantitative reckoning. Philologists will delight in his early chapters on the rise and fall of Roman numerals, while anthropologists and archaeologists will find their place in the closing chapter.
Dr. Anthony Aveni
Russell Colgate Distinguished University Professor Emeritus, Colgate University
The extraordinary variety of systems of numerical notation attested across the world is a source of ongoing puzzlement. In Reckonings an expert in the field of ethnomathematics mounts a powerful argument for going beyond purely intellectualist modes of explanation (in terms of some supposedly easily determinable criterion of 'efficiency') to insist on the need for a detailed exploration of the ways in which cognitive constraints interact with social, economic, and technological ones. The vindication of the comparative method that this affords carries important lessons for anthropology, history, cognitive science, and more generally for cross-cultural understanding—as vital a desideratum for us today as it has ever been.”
Sir G. E. R. Lloyd
University of Cambridge