Published online by Cambridge University Press: 20 January 2017
This is a plea for caution in using recent and important radiocarbon results as controls in correlating the Classic Maya Long Count with our own chronology. A final choice among alternative day-for-day hypotheses must condition one's view of the meaning of the calendar and of astronomy in Mesoamerican cultures generally. More is at stake than the firm dating of archaeological periods, important as that is, and in our desire for a decision there is danger of oversimplifying the problem. Already there has been a press report that the Spinden 12.9.0.0.0 correlation has been established, though equal support in the new evidence can be claimed for an alternative 12.9.0.0.0 hypothesis of Makemson. Nonspecialists wishing to form opinions as to specific correlations must still study the evidence as a whole. Three excellent summaries, well-spaced in time, have been published by Thompson (1935, 1950) and Andrews (1940).