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« Wisdom of the Ages | Main | One Answer »

December 30, 2007

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Yes, I agree with you on that. In addition, some of those optimist are those who fail to understand the concept of Black Swans and uncertainty. In "Failure to understand Black Swan leads to fallacious thinking" @ http://cij.inspiriting.com/?p=339, it quoted the parable of the turkey and ask this question:

"What do disasters such as the sub-prime crisis, probable collapse of Centro, collapse of Basis fund have in common? The common defense we hear is, “We didn’t expect it!” Those ‘experts’ often use technically sounding words like “six-sigma” to describe such unexpected events. In reality, they were just like the turkey: they think they know a lot when in reality, they know very little. That is, as what Taleb said, “compressing the range of possible uncertain states.” As a result, they were caught out by the unknown unknowns, just like the turkey. That is why economic and financial experts’ forecasts are often unreliable- in their models, the unknown unknowns do not exist and their forecasts depend on the non-existence of the unknown unknowns to be accurate. But in real life, unknown unknowns often appears unexpectedly, which serve to expose how much these experts do not know."

Many of these optimist scorned at the pessimists and label them predictors of gloom and doom. But in reality, they confuse predictions with preparing for Black Swans. To illustrate this point further, think of this: why parachutists pack a second reserve parachute? Based on statistical probability, the chances of the primary parachute failing to open is extremely slim. Does that mean this possibility should be completely ignored? This is precisely the thinking of those optimists- they jump without the 2nd reserve parachute because they only see the statistical improbability of the primary parachute failing. Worse still, those optimist thinks that by packing a second reserve parachute, a parachutist is predicting that the primary parachute will fail. Can you see the fallacy of such thinking?

Many in Wall Street are not only jumping without the 2nd reserve parachute. They are jumping repeatedly without their backup parachutes and trying out all kinds of exotic somersaults while jumping from the aircraft.

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