A finite world can support only a finite population; therefore, population growth must eventually equal zero.
The social arrangements that produce responsibility are arrangements that create coercion, of some sort.
Moreover, the practical recommendations deduced from ecological principles threaten the vested interests of commerce; it is hardly surprising that the financial and political power created by these investments should be used sometimes to suppress environmental impact studies.
But as population became denser, the natural chemical and biological recycling processes became overloaded, calling for a redefinition of property rights.
A technical solution may be defined as one that requires a change only in the techniques of the natural sciences, demanding little or nothing in the way of change in human values or ideas of morality.