exponential growth

Don Ashley dashley at TENET.EDU
Fri Feb 17 08:19:35 EST 1995


We have the projections.  Not on disk, however, and I'll try to figure a 
way to capture them. We don't have a scanner either and I'm not even sure 
they would transmit thru the newsgp w/o some sort of graphics interface.

On Fri, 17 Feb 1995, John de Rivaz wrote:

> I have been asked for the reference to the oft-quoted "if all those who 
> have ever died were resurrected the world's population would only 
> double."
> 
> Flicking through my books, including Jack Parsons' "Population versus 
> Liberty" has not produce it.
> 
> I do have graphs of world population increase 1000 to 1970 and they 
> show a curve of the form y equals x to the power of one point 
> something. (Not explicity stated in the text, at least if it was I 
> didn't find it.)
> 
> Does anyone have an academically accepted equation that represents 
> world growth, and can anyone suggest a mathematical method of using it 
> to calculate the effect of resurrecting all the world's dead?
> 
> I have thought that it could be programmed assumpting some 
> approximations:
> 
> 1.  average lifespan is 30 years to 1700, 75 years after
> 
> 2.  the lifespan of humanity is 10,000 years
> 
> 3.  the initial population is zero at -10000 from the present
> 
> then take blocks of 30 years, calculate the total population by scaling off 
> the graph obtained for the equation of growth and sum them all 
> together until 75 years before the present.
> 
> read off the present population.
> 
> the ratio between the two figures is the required result.
> 
> -- 
> Sincerely,     ****************************************       
>                * Publisher of        Longevity Report *
> John de Rivaz  *                     Fractal Report   *
>                *          details on request          *
>                ****************************************
> **** What is the point of life if it ends in death? ****
> 
> 
> 




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