I think it is a good bet that more evidence will be found of domestic-to-feral animal and plant species transitions. I would also bet that human population expa

I think it is a good bet that more evidence will be found of domestic-to-feral animal and plant species transitions. I would also bet that human population expansion is less uniform and monotonic, at least in regions, than generally acknowledged. That is, I think we will find populations that domesticated plants and animals, urbanized, grew to large size, and disappeared due to some crisis, and that human expansion was more lumpy, cyclic, and fitful than the typical smooth upward curve implies.