wAdam Smith (1776): ten men could make 48,000 pins a day, or almost 5,000 per person per day.
wKarl
Marx (1867): one woman or girl could supervise four
machines, each making 145,000 pins per
day, for almost 600,000 per
person per day.
wPratten
(1980): one person could supervise 24 machines, each making 500 pins a minute, or about 6 million pins per person per day.
