Populations interact, some decline to extinction, and some expand. In an ice age the tundra advances on the forest, but in no sense is there a "struggle" between them. As the temperature gets colder, the forest species decline and the tundra species increase; that is all. There is neither effort nor fight. As we move toward the more complex animals, of course, both effort and fighting become more common, but even in the predator-prey relationship, there is catching and eating rather than fighting.

Nothing fails like success, because we do not learn anything from it. We only learn from failure, but we do not always learn the right things from failure. If there is a failure of expectations, that is, if the messages that we receive are not the same as those we expected, we can make three possible inferences.

Looked at from the perspective of twentieth-century earth, we see three great stages in the dynamic process of the universe. To this whole process, as it spreads out over perhaps ten billion years of time and ten billion light years of space, we give the name evolution, and we see three great patterns within it. The first is physical evolution. This presumably started with the development of the most elementary particles (whatever they may be); then of neutrons, protons, electrons, and radiations; then of elements from hydrogen to uranium and beyond formed by combining protons and electrons; then of chemical compounds; then finally of increasingly complex molecules from amino acids, and proteins to the great watershed of DNA, the beginnings of life.

[Boulding grasps the significance of sociobiology's emphasis on biogenetics] that there are biogenetic factors in learning capacity and potential can hardly be denied... [yet] biogenetically imposed limits to human learning... seem to be much more remote... than are the limitations imposed by the biogenetic structure."

The evolutionary vision is agnostic in regard to systems in the universe of greater complexity than those of which human beings have clear knowledge. It recognizes aesthetic, moral, and religious ideas and experiences as a species, in this case of mental structures or of images, which clearly interacts with other species in the world's great' ecosystem.

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