Response to Comment on “Agriculture facilitated permanent human occupation of the Tibetan Plateau after 3600 B.P.”

Abstract

Guedes et al . have drawn attention to a mismatch between the predictions of their “thermal niche model” and the records we have published of early barley finds in the northeastern Tibetan Plateau. Here, we consider how that mismatch usefully draws our attention to the additional variables that may account for it—namely, variations in genetic expression and agricultural practice.