The Black Swan

Posted on | 2009/2/4 22:52:17

たしかエコノミストかなんかで先々週くらいに仕入れた言葉かと思いますが、Black Swanという言い方があるんだそうです。元々生物界には白い白鳥しかいないと考えられていたのですが、黒い白鳥が発見され生物学の常識が根底から覆されたことから由来する言葉で、英語にすると”The Impact of the Highly Improbable”ということなのだそうです。

今とかまさにBlack Swanなのかも知れませんが、Saxo Bankというスイスの銀行が、毎年このBlack Swan予測を出しているようです。

Saxo Bank’s Outrageous Claims for 2009:

  1. There will be severe social unrest in Iran as lower oil prices mean that the government will not be able to uphold the supply of basic necessities.
  2. Crude will trade at $25 as demand slows due to the worst global economic contraction since the great Depression.
  3. S&P will hit 500 in 2009 because of falling earnings, vaporizing housing equity and increased cost of funds in the corporate sector.
  4. The EU is likely to crack down on excessive government budget deficits in several member states, and Italy could live up to previous threats and leave the ERM completely.
  5. The AUDJPY will drop to 40. The decline in the commodities markets will affect the Australian economy.
  6. EURUSD will fall to 0.95 and then go to 1.30 as European bank balances are under tremendous pressure because of exposure to the faltering Eastern European markets and intra-European economic tensions.
  7. Chinese GDP growth drops to zero. The export driven sectors in the Chinese economy will be hurt significantly by the free-fall economic activity in the Global Trade and especially of the US.
  8. Pre-In’s First Out. Several of the Eastern European currencies currently pegged or semi-pegged to the EUR will be under increasing pressure due to capital outflows in 2009.
  9. Reuters/ Jefferies CRB Index to drop to 30% to 150. The Commodity bubble is bursting, with speculative excesses so large they have skewed the demand and supply statistics.
  10. 2009 will see the first Asian currencies to be pegged to CNY. Asian economies will increasingly look towards China to find new trade partners and scale down their hitherto US-centric agenda.

今読むと、起こっても不思議じゃないなとも思ったりしていますが。Black Swanはその定義が学術的に統計学的に立証できないものなわけですから、実際問題これを探り当てるには「勘」しかないのでしょうね。

追記:
そういや中学生の時に『Wild Swan』という本に惹き込まれたのを、ふと思い出しました。

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