The greater part of the second act should really be described to you by a historian. Although it was a very short act when compared to the first one, the climaxes complicate it a great deal. I, a prehistorian, have told you about only the first act, and the very beginning of the second. THE THIRD ACT Also, as a prehistorian I probably should not even mention the third act--it began so recently. The third act is _The Industrialization_. It is the one in which we ourselves are players. If the pace of the second act was so much faster than that of the first, the pace of the third act is terrific. The danger is that it may wear down the players completely. What sort of climaxes will the third act have, and are we already in one? You have seen by now that the acts of my play are given in terms of modes or basic patterns of human economy--ways in which people get food and protection and safety. The climaxes involve more than human economy. Economics and technological factors may be part of the climaxes, but they are not all. The climaxes may be revolutions in their own way, intellectual and social revolutions if you like. If the third act follows the pattern of the second act, a climax should come soon after the act begins. We may be due for one soon if we are not already in it. Remember the terrific pace of this third act. WHY BOTHER WITH PREHISTORY? Why do we bother about prehistory? The main reason is that we think it may point to useful ideas for the present. We are in the troublesome beginnings of the third act of the play. The beginnings of the second act may have lessons for us and give depth to our thinking. I know there are at least _some_ lessons, even in the present incomplete state of our knowledge. The players who began the second act--that of food-production--separately, in different parts of the world, were not all of one “pure race” nor did they have “pure” cultural traditions. Some apparently quite mixed Mediterraneans got off to the first start on the second act and brought it to its first two climaxes as well. Peoples of quite different physical type achieved the first climaxes in China and in the New World. In our British example of how the late prehistory of Europe worked, we listed a continuous series of “invasions” and “reverberations.” After each of these came fusion. Even though the Channel protected Britain from some of the extreme complications of the mixture and fusion of continental Europe, you can see how silly it would be to refer to a “pure” British race or a “pure” British culture. We speak of the United States as a “melting pot.” But this is nothing new. Actually, Britain and all the rest of the world have been “melting pots” at one time or another.