Ancient Mesopotamian discovery transforms knowledge of early farming
rutgers.edu
rutgers.edu
[1] https://www.goodreads.com/book/show/56269264-the-dawn-of-eve...
In particular, their theory of "play farming", that many societies around the world experimented with going in and out of agricultural societies, is relevant.
I don't think the interest here is the implication of developed trade networks at that time, but rather that the millet was found at all and what that says about the agricultural practices. For thousands of years, people wrote on clay tables with styli made from reeds, yet we've never actually found such a stylus or know precisely how they were made.
If you read the publication linked there is a lot of textual evidence for millet production that goes back into the 3rd millenium B.C.E. The transformation here has largely to do with new methods of discovering what crops were grown where, and a shift in our understanding.