11. Source: United Nations Development Program
弌亠亟仆亠仄亳仂于舒 仗仂亟仂仍亢亳亠仍仆仂
亢亳亰仆亳
Years
1820 2010
0
80
1900
40
1950
20
60
67 Years
(+18 Years)
49 Years
(+18 Years)
31 Years
(+5 Years)26 Years
12. Source: Angus Maddison, The World Economy: A Millennial Perspective (Paris: OECD, 2001).
弌亠亟仆亠亞仂亟仂于仂亠 亳仍仂 舒弍仂亳 舒仂于
Hours(1000s)
WorkedperPerson
1850 2000
3.0
2.5
2.0
1900
United States France
1950
Japan Brazil
1.5
50% Reduction
1.0
23. The exponential growth of
computing on a Logarithmic Plot
Calc./second for a $1000 laptop vs. Time
CalculationsperSecondper
$1000
Year
24
2050
2023
2010