Previsões credíveis

Recordou há dias Paul Krugman no New York Times:

Nine years ago The Economist ran a big story on oil, which was then selling for $10 a barrel. The magazine warned that this might not last. Instead, it suggested, oil might well fall to $5 a barrel.

In any case, The Economist asserted, the world faced "the prospect of cheap, plentiful oil for the foreseeable future".

Last week, oil hit $117.

É difícil prever, principalmente o futuro.