Impostors' prophets
Prediction illusion
After Donald trump got the nomination of Republican Party, a democrat to win the next presidency of the US by 9/11/2016
Ebola propagation to be worldwide by end 2016
After Brexit, EU likely to collapse
No more food in 25 years from now, only pills to be swallowed
Daily consultants, experts and media assail us with prediction but how credible and reliable are they? Well Philipp fetlock in his blockbuster, bestseller book: Expert Political Judgment: How Good Is It? How Can We Know? Over a period of decade meaning 10 years, investigated close to 28,361prediction from 284 self-appointed experts or if you want self-proclaimed professionals.
Surprise – surprise, the result of their accuracy turn out to, in year in the row to pure random coincidence. What is more striking is that – the semi illiterates were way better than the experts.
A pure most vivid example is the most recent one in the presidential election in the US. Guess what the republican nominee Donald Jr Trump won- with a large gap.
Although all the polls purported by different Media outlets out there, turnout to prove the opposite.
Consider this there is is more 1 million economists worldwide who work as full time employees- trying to predict financial crisis and interest rates"Except Dr Nassim taleb who predicted with greater accuracy- the financial crash of 2008". They use sophisticated computers. Can you see the worldwide consequence of crisis of 2008.If these so proclaimed experts were able to forecast, they would multimillionaire self-employed. Is that the case?No
Well, why this problem of wrong prediction persist?
First and foremost there is lack of skin in the game to quote Nassim Taleb.Meaning the predictor or the self-proclaimed expert doesn't eat, his own cocking and therefore is not harm by it.To put is simply, since they make a lot of predictions if they randomly hit the jackpot, the get big financial rewards and get publish in major acclaimed Journal. If they miss forecast, there is no harm to their reputation, no deterrence, no financial penalties, no exist of the gene pool, no filter. So the game keep on going that way.
The recent presidential elections in the US proved three things.
- Experts ,consultants and media are clueless about what is going on out there
- The media are extremely misleading
- The establishment is disconnected from the public – and most importantly the members of establishment believe their job is to think for the rest of us.
- Polls reflects what people say they would do, not actually what they do. Final crisis
Ideally, experts or consultant should have a sort of prediction fund- say £5000.If the forecast is correct, the expert collect his £5000 back plus his lucrative interest. If wrong, I suggest the money goes to charity.
So we live simultaneously in two different world: The mediocristan and the extremistan to quote probably the best risk expert alive today Dr Nassim Taleb
The mediocristan is characterise by it steadiness, regularity, stability, predictability. For if you gather randomly 1000 people a place them on the scale, and add to it the heaviest or biggest person on the planet, How much of the total will he represents? Answer only 0.3 .So in mediocristan the average of the total and the maximum are close each other.
Example: If you are paid per hour, meaning you are employee, your pay is the collection of the regular hours you make within days, weeks and months.
If you are dentist or a backer, you are pay by the number of patients to drill their teeth or the number of breads and cakes etc.. Customers buy. In conclusion you cannot scale your work like an artist or writer or venture capitalist, book publishers' researcher
The extremist an is domain where it the exception, the rare, the outlier that counts, characterise by unpredictability, uncertainty, unpredictability, error, mistake, option,volatility,time,the unknown, incomplete information, incomplete understanding. So let me give you a practical example:
Take again randomly the same 1000 people, we got recently- and instead of weight, let us take wealth and ad to them; the riches person alive today(bill gates).Now key question; How of the total of net worth of the total would he represents? Answer 99.999% of the total.
Or if you line up 1000 authors, close to 2% will bring half of the profits.
So in extremist an it is the exception that counts. Note that you can move from via social contagion and preferential attachment from mediocristan to extremist an.
The biggest problem of experts out there lies two things:
First In seeing patterns where there is none, than to miss on the pattern, or mistake the random with the non-random than the non- random with the random- just as mistaking a bear for a stone rather than a stone for a bear and as consequence you end up in it stomach. Reminder.
Second mistake, with the world that has become more complex, due to globalisation and internet; we are witnessing a huge rise of unpredictability couple with a high decrease of predictability and most consultants,advisors,policy makers, decision makers,experts,data analysts- analyst fall short of The Procrustean bed. Which in life consists precisely in simplifying the nonlinear and making it linear or clarifying by making easier the unpredictable and making it predictable-by the way a simplification that distorts. Reminder "See the bed of Pr"
So here are three big ideas to be taken away.
So when you encounter predictions, or future reward promises- forecast. Take a deep breath and ask yourself the following three question:
- What incentive does the expert have? If he is on salary or minimum wage, is he afraid of losing his position or have financial difficulties?
If he is self-appointed guru, sure enough he make living by selling books and lectures, therefore his prediction relies on media's attention and most importantly his prediction tend to sensational rather that than the statistical relevant.(The large deviation, the rare, the exception just as If you want to get an idea of a friend's temperament, ethics, and personal elegance, you need to look at him under the tests of severe circumstances, not under the regular rosy glow of daily life. Can you assess the danger a criminal poses by examining only what he does on an ordinary day? Indeed the normal, the regular, steadiness is often irrelevant.
Third what is the depth of his pay off over the past 5 to 10 years? Why?Because,the expert can have a perfect track record in prediction for the last 10 years and if the payoff is small, that means it is ireelevant.Hence don't fall short of the law of small numbers (reminder).
Finally remember what the Nobel Prize winner in atom physicist Niels Bohr said about the future "Prediction is very difficult, especially if it is about the future" from the same line F A Hayek put it this way; The mind cannot foresee its own advance