Epe luzeko Munduaren Ekonomia Historiarer ikuspegi labur bat

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Epe luzeko Munduaren Ekonomia Historiarer
ikuspegi labur bat
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Munduaren Populazioa, - 400 -2000
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Buru bakoitzako BPG-ren estimazioak, 1-2001 (in
1990 international Geary-khamis dollars)
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(No Transcript)
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Thomas Robert Malthus, 1766-1834.
An Essay on the Principle of Population, as it
affects the Future Improvement of Society, with
Remarks on the Speculations of Mr Godwin, M.
Condorcet and Other Writers, 1798
                                  
                       
Populazioaren hazkunde gaitasuna lurraren
gaitasuna elikagaiak ekoizteko erabat handiagoa
dela baieztatzen dut. Populazioa, oztoporik ez
balego, progresio geometrikoan handitzen da.
Elikagaiak, berriz, bakarrik progresio
aritmetikoan handitzen dira.
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Thomas Malthus

• Thomas Malthus (17661834) was an English
  clergyman whose theory on population, contained
  in An Essay on the Principle of Population (1798,
  and later revisions), has had a considerable
  impact on thinking about the limits of population
  growth. Malthus believed that unchecked
  population grows geometrically, a rate that
  surpasses the ability of the means of subsistence
  (e.g., food) to support it. To avoid
  overpopulation, two types of checks on population
  exist preventive checks and positive checks.
  Preventive checks result from human actions that
  lower the birthrate for Malthus, this largely
  meant the postponement of marriage to late ages.
  Positive checks include anything that operates to
  increase the death rate (e.g., war, famine,
  epidemics). While the operation of any of these
  checks reduces the rate of population growth,
  Malthus did not think that the preventive checks
  were powerful enough to prevent the population
  from growing faster than the means of
  subsistence. Sooner or later, the more drastic
  positive checks would come into play. Thus,
  humans were bound to over-reproduce and, in the
  end, human numbers would be reduced by increased
  deaths.

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Dibergentzi Handiaren Sorrera. Buru Bakoitzeko
BPG- ren eboluzioa munduan azken bi mila urteetan
(1990 urteko dolarretan adierazita)
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Dibergentzi Handiaren Sorrera. Buru Bakoitzeko
BPG- ren eboluzioa munduan azken bi mila urteetan
(1990 urteko dolarretan adierazita)
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Dibergentzi Handiaren Sorrera. Buru Bakoitzeko
BPG- ren eboluzioa munduan azken bi mila urteetan
(1990 urteko dolarretan adierazita)