The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from The Human Drift by Jack London: magnitude of population in that future day is well nigh
unthinkable. But there is only so much land and water on the
surface of the earth. Man, despite his marvellous
accomplishments, will never be able to increase the diameter of
the planet. The old days of virgin continents will be gone. The
habitable planet, from ice-cap to ice-cap, will be inhabited. And
in the matter of food-getting, as in everything else, man is only
finite. Undreamed-of efficiencies in food-getting may be
achieved, but, soon or late, man will find himself face to face
with Malthus' grim law. Not only will population catch up with
subsistence, but it will press against subsistence, and the
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