  Galor discovered many mysteries of the growth process. He lists them in his
Unified Growth Theory and wonders how they can be explained. Close inspection
of his mysteries reveals that they are of his own creation. They do not exist.
He created them by his habitually distorted presentation of data. One of his
self-created mysteries is the mystery of the alleged sudden spurt in the growth
rate of income per capita. This sudden spurt never happened. In order to
understand the growth rate of income per capita, its mathematical properties
are now explored and explained. The explanation is illustrated using the
historical world economic growth. Galor also wonders about the sudden spurt in
the growth rate of population. We show that this sudden spurt was also created
by the distorted presentation of data. The mechanism of the historical economic
growth and of the growth of human population is yet to be explained but it
would be unproductive to try to explain the non-existing and self-created
mysteries of the growth process described in the scientifically unacceptable
Unified Growth Theory. However, the problem is much deeper than just the
examination of this theory. Demographic Growth Theory is based on the incorrect
but deeply entrenched postulates developed by accretion over many years and now
generally accepted in the economic and demographic research, postulates
revolving around the concept of Malthusian stagnation and around a transition
from stagnation to growth. The study presented here and earlier similar
publications show that these postulates need to be replaced by interpretations
based on the mathematical analysis of data and on the correct understanding of
hyperbolic distributions.
