¶ Total capacity of U. S. industrial equipment is one billion horsepower, which does the work of ten billion men, or five times the earth's total population.
¶ On the basis of 1830 methods six million men would have been needed to cultivate the soil for the 1929 U. S. wheat crop. With the best extant equipment (such as 60-duckfoot gang plows) 4,000 men could have planted the whole crop.
¶ A new machine for making light bulbs produces 540 bulbs a minute, replaces 10,000 men.
¶...
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