Michelle C.

Langley, an ARCHE colleague of Brumm, contributed expertise in prehistoric material culture and behavioral modernity — the larger framework within which the betel nut finding is situated.

Clare Stokes contributed to the dental analysis work.

The recognition of all contributors through authorship is appropriate for the scale and character of the collaborative work.

The discovery was not the product of a single genius; it was the product of sustained collaborative effort across disciplines and across the decade-long research program at the Sulawesi sites.

The Next Question: How Old Is Human Drug Use, Really?