Monday, December 05, 2011

Quote of the Day: How Interventions Destabilizes

The critical issue in both cases is the artificial suppression of volatility -- the ups and downs of life -- in the name of stability. It is both misguided and dangerous to push unobserved risks further into the statistical tails of the probability distribution of outcomes and allow these high-impact, low-probability "tail risks" to disappear from policymakers' fields of observation. What the world is witnessing in Tunisia, Egypt, and Libya is simply what happens when highly constrained systems explode.

Complex systems that have artificially suppressed volatility tend to become extremely fragile, while at the same time exhibiting no visible risks. In fact, they tend to be too calm and exhibit minimal variability as silent risks accumulate beneath the surface. Although the stated intention of political leaders and economic policymakers is to stabilize the system by inhibiting fluctuations, the result tends to be the opposite. These artificially constrained systems become prone to "Black Swans" -- that is, they become extremely vulnerable to large-scale events that lie far from the statistical norm and were largely unpredictable to a given set of observers.

Such environments eventually experience massive blowups, catching everyone off-guard and undoing years of stability or, in some cases, ending up far worse than they were in their initial volatile state. Indeed, the longer it takes for the blowup to occur, the worse the resulting harm in both economic and political systems.

[bold emphasis added]

This one comes from my favorite iconoclast Nassim Taleb (hat tip Zero Hedge).

In short, interventions tends to disturb the natural flow of socio-economic-market systems, which results to unintended build up of destabilizing or unnatural or artificially imposed forces (e.g. economic malinvestments, imbalances in political representation) that eventually gets vented via “Black Swan” events.

This applies whether to financial markets or the political economy.

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