The crisis triggered a fertile period of scientific ferment and revolution in economic theory.

The fact that some religious fanatics might support a theory doesn't invalidate it, anymore than the concurrence of UFO abduction cults invalidates the notion of extra-terrestrial life.

At the time, my personal research objectives were to provide Keynesian economics with more rigorous foundations and to tighten and elaborate the logic of macroeconomic and monetary theory.

a theory in crisis.

Memorizing and regurgitating are not science. Real science is a constant investigation of the unknown.

. . .a scientific theory is just a mathematical model we make to describe our observations: it exists only in our minds. So it is meaningless to ask: which is real, "real" or "imaginary" time? It is simply a matter of which is the more useful description.