[5] It is difficult to find words which have a sequence or gradation of meaning with respect to both development and a range of time in the past, or with a range of time from somewhere in the past which is perhaps not yet ended. One standard Webster definition of stage is: “One of the steps into which the material development of man ... is divided.” I cannot find any dictionary definition that suggests which of the words, stage or era, has the meaning of a longer span of time. Therefore, I have chosen to let my eras be shorter, and to subdivide my stages into eras. Webster gives era as: “A signal stage of history, an epoch.” When I want to subdivide my eras, I find myself using sub-eras. Thus I speak of the eras within a stage and of the sub-eras within an era; that is, I do so when I feel that I really have to, and when the evidence is clear enough to allow it.

The food-producing revolution ushers in the food-producing stage. This stage began to be replaced by the industrial stage only about two hundred years ago. Now notice that my stage divisions are in terms of technology and economics. We must think sharply to be sure that the subdivisions of the stages, the eras, are in the same terms. This does not mean that I think technology and economics are the only important realms of culture. It is rather that for most of prehistoric time the materials left to the archeologists tend to limit our deductions to technology and economics.

I’m so soon out of my competence, as conventional ancient history begins, that I shall only suggest the earlier eras of the food-producing stage to you. This book is about prehistory, and I’m not a universal historian.

THE TWO EARLIEST ERAS OF THE FOOD-PRODUCING STAGE

The food-producing stage seems to appear in western Asia with really revolutionary suddenness. It is seen by the relative speed with which the traces of new crafts appear in the earliest village-farming community sites we’ve dug. It is seen by the spread and multiplication of these sites themselves, and the remarkable growth in human population we deduce from this increase in sites. We’ll look at some of these sites and the archeological traces they yield in the next chapter. When such village sites begin to appear, I believe we are in the era of the primary village-farming community. I also believe this is the second era of the food-producing stage.

The first era of the food-producing stage, I believe, was an era of incipient cultivation and animal domestication. I keep saying “I believe” because the actual evidence for this earlier era is so slight that one has to set it up mainly by playing a hunch for it. The reason for playing the hunch goes about as follows.

One thing we seem to be able to see, in the food-collecting era in general, is a tendency for people to begin to settle down. This settling down seemed to become further intensified in the terminal era. How this is connected with Professor Mathiassen’s “receptiveness” and the tendency to be experimental, we do not exactly know. The evidence from the New World comes into play here as well as that from the Old World. With this settling down in one place, the people of the terminal era—especially the “Forest folk” whom we know best—began making a great variety of new things. I remarked about this earlier in the chapter. Dr. Robert M. Adams is of the opinion that this atmosphere of experimentation with new tools—with new ways of collecting food—is the kind of atmosphere in which one might expect trials at planting and at animal domestication to have been made. We first begin to find traces of more permanent life in outdoor camp sites, although caves were still inhabited at the beginning of the terminal era. It is not surprising at all that the “Forest folk” had already domesticated the dog. In this sense, the whole era of food-collecting was becoming ready and almost “incipient” for cultivation and animal domestication.

Northwestern Europe was not the place for really effective beginnings in agriculture and animal domestication. These would have had to take place in one of those natural environments of promise, where a variety of plants and animals, each possible of domestication, was available in the wild state. Let me spell this out. Really effective food-production must include a variety of items to make up a reasonably well-rounded diet. The food-supply so produced must be trustworthy, even though the food-producing peoples themselves might be happy to supplement it with fish and wild strawberries, just as we do when such things are available. So, as we said earlier, part of our problem is that of finding a region with a natural environment which includes—and did include, some ten thousand years ago—a variety of possibly domesticable wild plants and animals.

NUCLEAR AREAS

Now comes the last of my definitions. A region with a natural environment which included a variety of wild plants and animals, both possible and ready for domestication, would be a central or core or nuclear area, that is, it would be when and if food-production took place within it. It is pretty hard for me to imagine food-production having ever made an independent start outside such a nuclear area, although there may be some possible nuclear areas in which food-production never took place (possibly in parts of Africa, for example).