Saturday, May 09, 2020

Black Swans, probability of an outlier on top of an extreme tail event


What are the chances that an extreme tail event like a pandemic is followed by another outlier? asked my senior colleague and further nudged, pretty low, right? wanting to engage all of us and stir up a conversation amongst colleagues and global fora.


Before I dive into sharing my views please allow me to indulge in a bit of mathematics – what are the chances of another outlier post an extreme tail event? Contrarian, as my response may seem to be, I would argue its ‘High’. The world loves simplification because that is what a human mind can absorb and fit into its logical neural circuits. But that’s precisely where the problem lies. More or less all analytics, economic, financial, geopolitical, or otherwise assumes Normal distribution of outcomes. The number of studies done, starting from Mandelbrot and Fama, proves otherwise but still, we choose to regress, consciously or unconsciously, to this convenient simplification. This convenient relapse, an amenity, allows one to limit the probability of a tail event, due to finite variances, and therefore exclude the unpleasantness associated with increased risk, if assumed otherwise. This understating of risk helps every participant to look the other way and keeps everyone happy, for e.g. allows a portfolio manager to provision lesser loss reserves and look good on returns, a credit rating agency to bias its way towards investment grade and earn additional fee income, an institutional money manager to manage capital by calculating VaR acceptable to investors, etc. However, this simplism which coerces us to eliminate all outcomes that cause jarring dissonance with our ‘yeah, it makes sense’ simplified thinking, is also its curse. Continuing with the parsimony of the Gaussian assumption is unreasonable and potentially dangerous in an increasingly VUCA world and we ought to move to fat-tailed distribution as a default assumption and wed it with an EVT distribution for tails. Normal distribution has to be relegated to being a ‘special case’ And why limit it to the world of economics and finance, we are now seeing extremes of temperatures, storms, wildfires, floods, etc. In the words of Leslie Rahl, founder of Capital Market Risk Advisors, “We seem to have once-in-a-lifetime-crisis every 3 or 4 years.” Therefore, coming back to the opening comment – what is the likelihood of another outlier after the current tail event? – I say, “High”.


Direct Democracy as a (Black Swan) idea looks most appealing at an individual level, very logical and yet very revolutionary. Looks like epidemics are akin to ‘stress test’ on political and economic functioning. In a curious case of similarities, it was the Cholera epidemic of 1867 which laid the foundation of direct democracy in Switzerland, and the COVID pandemic could well prove to be the stimuli for a similar outcome in many EU countries. Still, to me, the path to the full form of direct democracy appears to be distant, best case I see some optionalities on its way – something which may be guiding in nature but not binding. In a binding scenario, we could see some bizarre situations, for e.g. the trial and death of Socrates back in 399BC, a consequence of direct-democratic action, while frivolous but understandable given the era it took place. Fast forward to this century, another direct-democratic action, an ultra-modern, super-rich, well-educated, democratic state, Switzerland, didn’t allow women to vote as late as 1971!


I like colliding two different thoughts to generate new ones or solidify my thinking. So let me collide the (Black Swan) idea of direct democracy with another (Black Swan) idea, the fiscal union of EU, and let us see where it leads us to. In a fiscal union scenario I see more tough calls coming its way than popular calls. And the citizenry will be asked to vote on that in a direct democracy. This will require a heightened feeling of solidarity, very understandable within the national boundaries (e.g. centre-state) and in recent history during German unification. But to wish for that across National boundaries is a stretch. Let us remind ourselves that bailouts didn't come out of solidarity. It came out of compulsion and fear of contagion. I regularly come across intelligentsia making a case in favor but find it difficult to fathom support within the masses. I foresee the raw tsunamic wave of referendum votes smashing the fiscal union idea on its path. Let's run a thought experiment and play out an actual referendum - citizens of a Country X, toil hard, pay high taxes, maintain fiscal discipline at the sovereign and individual level, are asked to vote - 'to take on liability for a loose sovereign spender' who breaks the fiscal rules. Not too difficult to imagine the outcome. Another round - this time citizens of a country who currently pay lower taxes, have maintained a competitive economy and therefore retain jobs are asked to vote on a referendum to pay higher taxes because of EU fiscal policy, a byproduct of which would be redistribution, lost competitiveness and jobs destroyed. Not too difficult to predict the outcome here either. Continued severe levels of austerity aren't very popular either. Fiscal union goes with the political union and that is a minefield. Politicians are accountable to local people and an argument that they are helpless is difficult to fly. That they are puppets with rules being set in the opaque chambers of Brussels will not get them votes. Do you see an opening for far-right here? I do. In summary, both not happening or best happening in a diluted version.


Staying with the fiscal union just a little longer to connect it with my next observation, as much as I hate to think and certainly would wish that I be entirely wrong on this one, the tail event I foresee is EU break-up rather than progressing on a fiscal union. With the foundation of the longest peace-time period history has seen completely rattled, the break-up need not be full-scale. On the lower-risk side, the introduction of multi-tiered Euro currency, which gives some leg room to economies and on the higher-risk side, multi-tiered EU unions or an absolute worst-case scenario of multiple exits. The bloc is a study in contrast – loose spenders at one end of the spectrum and the ones who run a tight ship at the other. It will require an exponential leap of faith to expect that citizens of the latter keep bailing out the former and smilingly keep assuming debt, a paradoxical reward for being fiscally disciplined. With the existing paradigm shaken by an earthquake of a massive Richter magnitude, the idea of the fiscal union stands weak on its knees and resultant challenges may lead to a break-up. An EU break up would be a catastrophic black swan. 


Being a European lover and not wanting to end on low, let me sip a white wine to gulp down this black swan thought and truly wish it never happens! Simplistic thinking of a simple man!


 


Sunday, April 19, 2020

#Solidarity

The head of the division of the bank which I work for posted a discussion note on an internal discussion site ( and also on LinkedIn) -

Quote

Imagine it is 2040 and the exam question at school is "#Solidarity during the Corona crisis in 2020" - What will the next generation with the massive benefit of hindsight, assess as successful, and what might we have missed? especially on multiple aspects of #solidarity for e.g.

 - was our #solidarity national / continental / global
 - economic #solidarity with Italy
 - was there any money left for climate change or was it just fashionable topic at summer conferences
 - #solidarity with people suffering from mental illness due to the ubiquitous fear
 - #solidarity with people getting laid off and prevention of stigma
 - #solidarity with people more worried about livelihood than life
 - were we given unbiased facts or fed worst-case scenarios and sensationalistic headlines
 - #solidarity with people not engaging in panic buying due to lack of financial cushion
 - ...

Unquote

and many more aspects. I have picked up a few and have simplified some of the comments above. I was very impressed that not only he thought about these but also posted them in a public forum and invited views. It is commendable as it makes senior leaders understand their bias and be more sensitive to differing opinions and show #solidarity with differing opinions.

After a long time, I came across such a pertinent post, a post other than showcasing financial successes, products, webinars, etc. and my heart called out to respond. I wished and hoped that world leaders thought and acted that way.  Thinking on those lines, my fingers started dancing on the keyboard and I picked up some of the elements to respond. Here I reproduce the same.

The biggest casualty would be Globalisation and along with that the #globalsolidarity. National boundaries that got faded and blurred through years of multilateralism, trade and cash flows will see heightened gerrymandering. Not all re-penciling may happen at physical borders but through new controls, tariff and non-tariff barriers aimed at protecting 'their' people. Further dealing a knock-out blow to #globalsolidarity, the supply chains which serve as foundation and lifeblood of globalization, be it in the form of tangible parts or intangible services will be brought back in. In some cases, it may be a genuine case of risk-management but in most, it would be otherwise. We have seen how countries responded by aggressively closing borders, banning supplies of personal-protection equipment, ventilators, etc. The crisis laid bare default position of many countries. Nothing stands out more starkly than the poorly coordinated global response.

Beyond a point citizens of one country do not share the pain on behalf of the other especially financial. Passports start showing off their colors. This is the reason why we saw rise of political leadership and support base swinging right. We saw trade and currency unions but not fiscal unions. We saw Brexit and time to time keep hearing calls for other such exits.

The crisis gave a glimpse of what 'good' looks like - people could see Himalayas from afar and sparkling clean canals of Venice among the many such miracles. Despite that, I believe climate change initiatives will take a hit. It will remain important but will not retain the same priority. Taking a cue from Thomas Szasz (15 Apr 1920 - 2012 ), author and professor of psychiatry, who said, " The greatest analgesic, soporific, stimulant, tranquilizer, narcotic, and to some extent even antibiotic - in short, the closest thing to a genuine panacea - known to medical science is work." With work and therefore livelihood getting impacted all resources are going to get directed to address that and climate change goals will take a backseat.

Having said that it is not all negative. Many firms are showing #solidarity by not firing people, by providing mental health programs, by actively encouraging#workfromhome, by multiplying contributions. Shout out to my firm #DeutscheBank for going far not only on each of the above counts but also tinkering with its well-recognized logo to relay the message.

Individual #solidarity is at an all-time high. This life and livelihood crisis brought a sobering realization that it is about humanity. We know about many existing and new helping groups that are doing their every bit to help the disadvantaged, especially the financially disadvantaged. For many who manage to get only one meal a day, do not have shelter and don't have access to clean water forget regular washing of hands, Covid is a distant and far less dangerous enemy. I am aware of individual stories where people have gone above and beyond to help the elderly.

I particularly admire EU and within that Germany, where I live, for its response on many fronts - #solidarity towards workforce through Kurzarbeit programs, #solidarity towards EU through delayed border controls, #solidarity towards personal rights and privacy in wake of increased calls on surveillance, #solidarity towards neighboring countries by taking in their patients, #globalsolidarity by making public the Covid test-code, #solidarity by supplying kits etc.

To individuals, it has also brought in a hard philosophical realization that life is ephemeral. Also that what one truly needs is hardly anything. An in-our-face realization that if one 'left' having lived for himself/herself then was it truly worth it? A call for volunteers in UK led to an army of people registering for it. A similar call for financial support led to a massive inflow of contributions in India. This collective thought brings lot of hope towards heightened #solidarity towards vulnerable segments.

Coming back to the essay, if a similar essay was to be written immediately after WW2, it would have been difficult to imagine the world we live in today but it did turn out differently. So will be the case here. In the long run everything bounces back and so will the economy, wealth and prosperity of today. What matters and what is important are our actions in the intermittant!




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