That study about wild-to-domestic doesn’t indicate what you seem to think it means, although they already had the skills. The earliest known sample of multirow (domesticated) barley RC dated at 14K old.
Learning the consequences of seed-scattering requires fixed habitation for a matter of mere months — scattering after the maturation, and new germination at the beginning of the next growing season.
The need for water for human life must have been known for a long time, or the whole outfit would have gone under after three days without it.
Agriculture led to fixed domiciles. Raids by those who hadn’t figured it out yet led to concentration of settlements, collective defense, standing armies, political systems, accounting practices and recordkeeping (for maintaining property claims and water rights, as well as taxes), writing systems, ceramic arts, etc, not necessarily in that order.
Trade has probably always been around, and not just for the world’s oldest profession.
Interesting, and thanks for clarification.
One thing this article gets right is the necessity of concentration of people into agricultural-conducive areas for the magic of domestication to reveal itself. Even if it happened earlier than the Younger Dryas, or around its onset, which your 14K date would indicate, there had to be a long time for its replication and spread, which I’ve always thought the YD forced.