The United States As a Credit System, Not a Monetarist One
Probably, for not less than three generations, the organization of human society should been foreseen as depending presently upon a system of respectively fully sovereign nation-states, united in intention through a common commitment to a true credit-system, rather than any form of continuation of a monetarist system.
Long before the time three generations will have lapsed, the progress of mankind's entry to the "colonization" of nearby Solar space, and somewhat beyond, should have reached a preliminary state of "colonization" of not only our Moon, but also Mars.
The human habitation might still, then, be essentially limited to pioneering on the Moon and Mars, but, the security of those colonies, and also Earth itself, will have come to depend on a vast system of dense deployments of units of instrumentation for protection of mankind's life within the inner range of the Solar planetary system. It is also clear in the views of the relevant specialists, that that will be a domain in which an increasingly extra-terrestrial mankind "mines" the sources of asteroids and such, rather than going back to dig such materials out of Earth. That will be within the range of realization of thermonuclear fusion.
Later, when systems of matter/anti-matter are being deployed as a resource for developing a protective screen of security objects, including galactic weather-forecasting, within the Solar system and nearby regions of the galaxy, we should have reached states of technological development virtually beyond the reach of our potential conceptions today; then, humanity should have reached the domain of man's matter/anti-matter travel to the rim of the Solar system and beyond.
There is a systematic approach to understanding the implications of those notions of the potential future of mankind within even the bounds of the remainder of the present century. The dark side of that issue, is that unless we accomplish such objectives, mankind might become extinct for lack of such progress. The continuation of the "zero technological growth" policy would probably lead toward the extinction of our species within the remainder of this century—already, within the course of the Twentieth Century, the "zero-growth" policies of the just-concluded century, such as the policies of the late Bertrand Russell, have already brought mankind to the brink of a beginning of a threat to the continued existence of the human species, a danger which inheres in what we are currently forbidding be done.