This concept of capital-rebuilding is so important that it may be desirable to digress for a moment. In the broadest sense of the word, capital means… - Kenneth E. Boulding

My father, William C. Boulding, was a working plumber in business for himself. At the back of the house was the yard, a corrugated iron shed full of pipes, wrenches, and blow torches, and other mysterious and rather frightening apparatus. He had two faithful employees, Billy Fox, who was moody and regarded as a little queer, and Billy Sankey, who was short and cheerful. They and my father always smelled strongly of some kind of grease. My father was a gentle man. I never I never heard his voice raised in anger. He had had a very hard childhood. His father died soon after he was born; his mother married again, a man known in the family legends as "Pa Hardacre," about whom endless stories were told. He was a bigamist. He drove my father out of the house at the age of twelve to earn his own living on the streets of Liverpool. He constantly mistreated my half-aunts, Ethel and Rosie. He died before I was born, but my mother's accounts of him sounded like something out of Dickens.

Prediction of the future is possible only in systems that have stable parameters like celestial mechanics. The only reason why prediction is so successful in celestial mechanics is that the evolution of the solar system has ground to a halt in what is essentially a dynamic equilibrium with stable parameters. Evolutionary systems, however, by their very nature have unstable parameters. They are disequilibrium systems and in such systems our power of prediction, though not zero, is very limited because of the unpredictability of the parameters themselves. If, of course, it were possible to predict the change in the parameters, then there would be other parameters which were unchanged, but the search for ultimately stable parameters in evolutionary systems is futile, for they probably do not exist... Social systems have Heisenberg principles all over the place, for we cannot predict the future without changing it.

Physicists can only talk to other physicists and economists to economists... sociologists often cannot even understand each other.