Survivorship Bias: Survivorship
Bias is the natural tendency to look at the survivors for the keys to success
rather than to examine those who didnÕt survive, many of which disappear
without a trace. If 100 restaurants
are founded and five of the new eateries achieve rip-roaring success, business
schools usually study the decisions and strategies of the five survivors, not
the 95 failures which closed their doors and left no trail of decisions and
strategies to study. As David McRaney observes in his
excellent account of survivorship
bias, by focusing solely on survivors
rather than those who failed, the causes of failure become invisible. And if
the causes of failure are invisible, the critical factors that determine
success also become invisible.
Even worse,
we draw faulty conclusions from the decisions of the survivors, as we naturally
assume their decisions led to success, when the success might have been the
result of luck or a confluence of factors that cannot be reasonably duplicated.We are often reassured by the financially
successful that perseverance and the willingness to accept risk are the key
factors in success. But as McRaney explains,
this is the equivalent of asking the one actor from a rural state who achieved
Hollywood stardom for the key factors of his success, on the assumption that anyone
else following the same path will reach stardom.
But
magazines never track down the 100 other aspiring actors from the same region
who went to Hollywood and persevered and took risks but who failed to become
stars. Examining the few hundred miners who succeeded in finding enough gold in
the Klondike in 1898 and returning with enough of their newfound wealth to make
a difference in their life prospects while ignoring the experiences and
decisions of the 100,000 who set off for the gold fields and the 30,000 who
reached the Klondike but who returned home penniless (if they survived the
harsh conditions) will yield a variety of false conclusions, for luck is never
introduced as the deciding factor.
The
narrative that success breeds success has no role for luck, which is by
definition semi-random and therefore uncorrelated to the stratagems of the
survivors. Here is McRaneyÕs summary of the role of luck:In short, the advice business is a monopoly run by
survivors. As the psychologist Daniel Kahneman writes
in his book Thinking Fast and Slow, ÒA stupid decision that works out
well becomes a brilliant decision in hindsight.Ó The things a great company
like Microsoft or Google or Apple did right are like the (World War II) planes
with bullet holes in the wings. The companies that burned all the way to the
ground after taking massive damage fade from memory. Before you emulate the
history of a famous company, Kahneman says, you
should imagine going back in time when that company was just getting by and ask
yourself if the outcome of its decisions were in any way predictable. If not,
you are probably seeing patterns in hindsight where there was only chaos in the
moment. He sums it up like so, ÒIf you group successes together and look for
what makes them similar, the only real answer will be luck.Ó
Drawing
Over-Arching Conclusions from Single ExamplesA similar form of bias appears when commentators attribute ChinaÕs
great developmental success to its command economy, or Silicon ValleyÕs
enduring role as a center of innovation to AmericaÕs
military-industrial-academic-research complex and the U.S. cultureÕs broad
acceptance of risk-taking.Who can say with certainty
that another model of development might have duplicated ChinaÕs growth record
but avoided the endemic corruption, environmental destruction and widening
wealth inequality that are the negative consequences of the command-economy
model? No one can say, as there are no other Chinas to refer to for
comparison.
If
duplicating Silicon Valley were just a matter of government support of research
and close ties between corporations and universities, there would be dozens of
Silicon Valley rivals, as billions of dollars have been expended globally to
duplicate the Silicon Valley model. But Silicon Valley remains in a class of
its own. Clearly, Northern CaliforniaÕs engine of innovation cannot be
distilled down to a simplistic model that can be duplicated by policies and investment.The conventional conclusion that the major
central banks—the Federal Reserve, the Bank of Japan, the European
Central Bank and the Bank of China—succeeded in saving the global economy
from depression in 2008-09 is another example of drawing over-arching
conclusions about success from single examples.Since
each nation/region is unique, any claim that the policies of any one central
bank can be applied to other nations/regions with equivalent success is a
highly questionable assumption. Since there is only one European Union,
Japan, China and U.S.A., there are no opportunities to test the assumption that
the central bank recipe used in 2008-09 can be applied with equal success in
future financial crises in these very different economies.
Previous
Policies Have Changed ConditionsOne reason we
cannot draw over-arching conclusions about the drastic monetary policies
enacted in 2008-09 is that those policies have changed the financial-political
landscape. As a result, what worked in 2008-09 may not succeed in the next
financial crisis because those policies only worked in the specific set of conditions
of that crisis. If the conditions have changed, then the strategies that were ÔsuccessfulÕ
in the previous set of conditions will not yield the same outcome.For
example, central banks lowered interest rates to near-zero in 2008-09 to spark
borrowing and refinancing of existing debt. Now that rates are still near-zero,
this policy and outcome cannot be duplicated. Lessons drawn from
successes that cannot be repeated are suspect.
Previously
successful policies may fail in the next crisis due to diminishing returns:
for example, policies that extend credit to marginal borrowers to bring demand
forward (i.e. subprime auto loans) eventually reach all but the riskiest
borrowers. Extending those policies essentially guarantees rising
defaults as people with no business borrowing money are given credit to
maintain consumption.As defaults soar, lenders record
losses and sales decline, as consumption was already brought forward.Due to diminishing returns, a policy that was
successful at first fails when extended.In effect,
successful policies may be time-stamped; not only do they only work in specific
circumstances, they only work for a limited length of time in those specific
conditions. Beyond those conditions and timeline, the supposed factors of success
no longer work.
Are the
Outcomes of Monetary Policies Truly Predictable?As noted above, any policy identified as the
difference between success and failure must pass a basic test: When the
policy is applied, is the outcome predictable? For example, if
central banks inject liquidity and buy assets (quantitative easing) in the next
financial crisis, will those policies duplicate the results seen in 2008-14?The
current set of fiscal and monetary policies pursued by central banks and states
are all based on lessons drawn from the Great Depression of the 1930s. The
successful (if slow and uneven) ÒrecoveryÓ since the 2008-09 global financial
meltdown is being touted as evidence that the key determinants of success drawn
from the Great Depression are still valid: the Keynesian (or neo-Keynesian)
policies of massive deficit spending by central states and extreme monetary
easing policies by central banks.Are the present-day
conditions identical to those of the Great Depression? If not, then how can
anyone conclude that the lessons drawn from that era will be valid in an
entirely different set of conditions?We need only
consider JapanÕs remarkably unsuccessful 25-year pursuit of these policies to
wonder if the outcomes of these sacrosanct monetary and fiscal policies are
truly predictable, or whether the key determinants of macro-economic success
and failure have yet to be identified.
The Seeds of Failure Are Sown in the Initial Flush of SuccessEven more troubling is the possibility that these monetary policies have sown the seeds of systemic failure in their pursuit of the extremes that yielded the initial flush of success.That this initial success might be brief and transitory rather than enduring is rarely considered. If this is the case—and the slowing global ÒrecoveryÓ suggests this is indeed so—then the success of these extreme policies is illusory, and the truly key determinants of success and failure remain elusive.In Part 2: The 6 Reasons The Next Economic Rescue Will Fail, we examine why the current unstable ÒrecoveryÓ must topple despite the central plannersÕ best efforts to sustain it. They simply donÕt have an accurate awareness of the true situation, nor have the right tools and skills to address it — and so, in their ignorance and fear, are pulling levers that are inconsequential (at best) or will hasten the destabilization of the system.Click here to access Part 2
of this report (free executive summary; enrollment required for full access) Posted in General | 2 Comments