sabato 26 gennaio 2008

Buon compleanno Mr. Ehrlich

Previsioni spettacolarmente sbagliate.

This year is the 40th anniversary of Paul Ehrlich's influential The Population Bomb, a book that predicted an apocalyptic overpopulation crisis in the 1970s and '80s.

Ehrlich's book provides a lesson we still haven't learnt. His prophecy that the starvation of millions of people in the developed world was imminent was spectacularly wrong — humanity survived without any of the forced sterilisation that Ehrlich believed was necessary.
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Ehrlich was at the forefront of a wave of pessimistic doomsayers in the late 1960s and early '70s. And these doomsayers weren't just cranks — or, if they were cranks, they were cranks with university tenure.

Despite what should be a humiliating failure for his theory of overpopulation, Ehrlich is still employed as a professor of population studies by Stanford University. Similarly, when George Wald predicted in a 1970 speech that civilisation was likely to end within 15 or 30 years, his audience was reminded that he was a Nobel Prize-winning biologist