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The way I would approach the computation is to plot population against time and do a linear regression on the logarithms of the population. Since population growth is an exponential increase, the logs will be a linear increase of population vs time., so the linear regression on logs would be quite appropriate and would allow you to directly get the exponential coefficient. The reason your 5 pt regression is different is probably because the growth isn't exponential, for the last point, but is leveling off as stated in the article.One problem with the article is that it used linear math on an exponential data and made a wrong conclusion that the population would head toward zero.Nevertheless the problem the world has to face is how to eventually stop the exponential growth dead in its tracks before the infestation of humans on earth depletes the resources that are needed for humans to survive.
The way I would approach the computation is to plot population against time and do a linear regression on the logarithms of the population. Since population growth is an exponential increase, the logs will be a linear increase of population vs time., so the linear regression on logs would be quite appropriate and would allow you to directly get the exponential coefficient. The reason your 5 pt regression is different is probably because the growth isn't exponential, for the last point, but is leveling off as stated in the article.
One problem with the article is that it used linear math on an exponential data and made a wrong conclusion that the population would head toward zero.
Nevertheless the problem the world has to face is how to eventually stop the exponential growth dead in its tracks before the infestation of humans on earth depletes the resources that are needed for humans to survive.
