Either that or a few thousand years from now our descendants will have evolved down two distinct paths and there will be two branches of humanoids. One, branch will become soft, gentle doe-eyed creatures - not too terribly smart - who live in herd like groups, perhaps in slowly-decaying cities, cared for by the machines set into motion by far distant ancestors that they scarcely remember. They spend the vast majority of their days chewing and digesting the grains they subsist on.

The other branch become tough, independent carnivorous hunters. They are the descendants of meat-eaters cast out of the cities when even the mere thought of eating meat became too TERRIBLE for the increasing effete vegan city dwellers to accept. And as machines put more and more of the earth under mono-culture grain cultivation to feed the ever increasing numbers of grain-eaters, there will be less and less "wild space" and fewer and fewer other species of animals to hunt. Eventually the hunters will turn to hunting and eating their cousins, the grain-eaters.

Oh, wait? Didn't I just describe a distant future very similar to the one H.G. Wells described in The Time Machine. Eloi or Morlocks? Which will your 137th generation grandchildren become?