• Complain

Pablo Triana - Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?

Here you can read online Pablo Triana - Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets? full text of the book (entire story) in english for free. Download pdf and epub, get meaning, cover and reviews about this ebook. year: 2009, publisher: John Wiley & Sons, genre: Politics. Description of the work, (preface) as well as reviews are available. Best literature library LitArk.com created for fans of good reading and offers a wide selection of genres:

Romance novel Science fiction Adventure Detective Science History Home and family Prose Art Politics Computer Non-fiction Religion Business Children Humor

Choose a favorite category and find really read worthwhile books. Enjoy immersion in the world of imagination, feel the emotions of the characters or learn something new for yourself, make an fascinating discovery.

No cover
  • Book:
    Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?
  • Author:
  • Publisher:
    John Wiley & Sons
  • Genre:
  • Year:
    2009
  • Rating:
    5 / 5
  • Favourites:
    Add to favourites
  • Your mark:
    • 100
    • 1
    • 2
    • 3
    • 4
    • 5

Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?: summary, description and annotation

We offer to read an annotation, description, summary or preface (depends on what the author of the book "Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?" wrote himself). If you haven't found the necessary information about the book — write in the comments, we will try to find it.

LECTURING BIRDS ON FLYING For the past few decades, the financial world has often displayed an unreasonable willingness to believe that the model is right, the market is wrong, in spite of the fact that these theoretical machinations were largely responsible for the stock market crash of 1987, the LTCM crisis of 1998, the credit crisis of 2008, and many other blow-ups, large and small. Why have both financial insiders (traders, risk managers, executives) and outsiders (academics, journalists, regulators, the public) consistently demonstrated a willingness to treat quantifications as gospel? Nassim Taleb first addressed the conflicts between theoretical and real finance in his technical treatise on options, Dynamic Hedging. Now, in Lecturing Birds on Flying, Pablo Triana offers a powerful indictment on the trustworthiness of financial theory, explainingin jargon-free plain Englishhow malfunctions in these quantitative machines have wreaked havoc in our real world. Triana first analyzes the fundamental question of whether financial markets can in principle really be solved mathematically. He shows that the markets indeed cannot be tamed with equations, presenting a long and powerful list of obstacles to prove his point: maverick unlawful human actions rule the markets, unexpected and unimaginable events shape the markets, and historical data is not necessarily a trustworthy guide to the future of the markets. The author then examines the sources of origin of many prevalent theories and mathematical dictums. He details how the field of financial economics evolved from a descriptive discipline to an abstract one dedicated to technically concocting professors own versions of how such a world should work. He goes on to explain how Wall Street and other financial centers became eager employers of scientists, and how scientists became eager employees of financial firms. Triana concludes with an in-depth discussion of the most significant historical episodes of theory-caused real-life market malaise, with a strong emphasis on the current credit crisis. In the end, Lecturing Birds on Flying calls for the radical substitution of good old-fashioned common sense in place of mathematical decision-making and the restoration to financial power of those who are completely unchained to the iron ball of classroom-obtained qualifications.

Pablo Triana: author's other books


Who wrote Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?? Find out the surname, the name of the author of the book and a list of all author's works by series.

Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets? — read online for free the complete book (whole text) full work

Below is the text of the book, divided by pages. System saving the place of the last page read, allows you to conveniently read the book "Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?" online for free, without having to search again every time where you left off. Put a bookmark, and you can go to the page where you finished reading at any time.

Light

Font size:

Reset

Interval:

Bookmark:

Make
Table of Contents To my parents who gave me the perfect life Too - photo 1
Table of Contents

To my parents who gave me the perfect life Too large a proportion of - photo 2
To my parents, who gave me the perfect life.
Too large a proportion of mathematical economics are a mere concoction, as imprecise as the initial assumptions they rest on, which allow the author to lose sight of the complexities and interdependencies of the real world in a maze of pretentious and unhelpful symbols.
John Maynard Keynes, 1936

Because of the success of science there is a kind of pseudo-science, social science isan example, which is not a science. They follow the forms, they gather data andso forth, but they dont get any laws, they havent found anything, they haventgot anywhere (yet)...Maybe I am wrong, maybe they do know but I dont thinkso, I have the advantage of having found out how hard it is to really get to knowsomething, how careful you have to be about checking the experiments, how easyit is to make mistakes. I know what it means to know something and thereforeI see how they get their information and I cant believe that they have done theworks necessary, and the checks necessary, and the care necessary. I have a greatsuspicion, that they dont know and that they are intimidating people. I dontknow the world very well, but thats what I think.
Richard Feynman, 1981

Beware of geeks bearing formulas.
Warren Buffett, 2008
Foreword
I
January 2009: I am at the World Economic Forum in Davos, looking at the sorry crowd of businessmen, journalists, and bankers. There are also a few finance academics. Many practitioners look like they have just fallen off a bicycle, still confused about how to behave. All these years, they had not realized that their models underestimated the risks of high-impact rare events, allowing the buildup of huge positions that are in the process of destroying free markets, capitalism, and finance. Instead of making probabilistic assessments about Black Swans, they should have insured some kind of robustness to them. I feel sorry for the crowd, as I am certain that most of these people will not be here next yearthere is effectively a mechanism called evolution, harsh to humans.
But the academics among them, equally wrong about the models (in fact, they were the ones feeding bankers with bad models), wrong about the world, wrong about the very notion of knowledge, wrong about everything, will be back next yearthat I guarantee. Unless they are caught seducing graduate assistants, their jobs are safe. Nobody ever lost his tenure in social science for being wrong (the opposite may be true). There is no such thing as evolution in academic settings.
II
The biggest myth Ive encountered in my life is as follows: that the road from practical know-how to theoretical knowledge is reversiblein other words, that theoretical knowledge can lead to practical applications, just as practical applications can lead to theoretical knowledge. After all, this is the reason we have schools, universities, professors, research centers, homework, exams, essays, dissertations, and the strange brand of individuals called economists.
Yet the strange thing is that it is very hard to realize that knowledge cannot travel equally in both directions. It flows better from practice to theorybut to understand it you have nontheoretical knowledge. And people who have nontheoretical knowledge dont think of these things.
Indeed, if knowledge flowed equally in both directions, then theory without experience should be equivalent to experience without theorywhich is not the case.
The myth may have all started in a Plato dialogue, Euthyphro, in which Socrates heckled a fellow who claimed to be pious but could not define piety. The flustered fellow, bullied by Socrates, never replied (according to Plato) that babies drink their mothers milk without being able to define what drinking milk is, or love their mother without being to explain what love or mother mean. This led to the thinking in the primacy and overblown importance of what can be called propositional knowledgewith so many side effects.
Alas, it took me a long time to disbelieve in propositional knowledge. Not only do you need to be a practitioner to realize it, but you need to ignore cultural opinions and use the raw, plain, easily obtainable, and somewhat shockingly potent evidence. And if you consider the effect for a moment, you will realize that it is more consequential than you thought.
Let me explain how the problem started screaming at me, around 1998. I was then sitting in a Chicago restaurant with a finance academic, though a true, thoughtful gentleman. He was advising one of the local exchanges on new products and wanted my opinion on the introduction of knock-out optionswhich I had covered in some detail in my first book, Dynamic Hedging. He recognized that the demand for these options was great, but wondered how traders could handle these exotics if they do not understand the Girsanov theorem. The Girsanov theorem is about a change of probability measure, something mathematically complicated that was needed to derive a closed-form formula for the optionsthough in the well-behaved Gaussian world. But you dont need it to understand anything about exotic options. For a minute I wondered if I was living on another planet or if the gentlemans PhD led to his strange loss of common senseor if people without practical sense usually manage to get the energy to acquire a PhD in financial economics. Nobody worries that a child ignorant of the various theorems of thermodynamics and incapable of solving an equation of motion would be unable to ride a bicycle. Yet, why is it that we made the Euthyphro mistake with our understanding of quantitative products in the markets? Why should traders responding to supply and demand, little more, competing to make a buck, do the Girsanov theorem, any more than a trader of pistachios in the Souk of Damascus needs to solve general equilibrium equations to set the price of his product?
Then I realized that there has to be a problem with educationany form of formal education. I collected enough evidence that once you get a theory in your head, you can no longer understand how people can operate without it. And you look at practitioners, lecture them on how to do their business, and live under the illusion that they owe you their lives. Without your theories and your learning, they will never go anywhere.
All that can be tested. How? We can look at historical evidence. It is there, in front of our eyes, staring at us.
III
Let us take what is known as the Black-Scholes option pricing formula. Every person who had the misfortune of taking a finance class is under the illusion that the Black-Scholes-Merton formula is a gift from the three individuals who offered it to mankind and need to be rewarded for their great deed because we otherwise would not have the technology to understand these items. Without it we cannot price options. True?
Well, Espen Haug and I scratched the surface looking for the real evidence going back to the late nineteenth century. And we figured out that traders did much, much better pricing options before the option formulas were invented. The solid arbitrages were maintained (put-call parity, no negative butterfly, etc.). Traders, thanks to tinkering and evolutionary pressures, fumbled their way into a heuristic option pricing formula: Those who liked to short out-of-the-money options blew up in time; those who bought them survived. Traders knew what the heuristic delta wasabout half for an at-the-money option, progressively less for an out-of-the-money option. Indeed, in our paper we interviewed veterans who confirmed that option traders in Chicago priced off the butterfly, with no sheets (i.e., no pricing formula). I myself was a pit trader in Chicago in the early 1990s and saw that prominent option traders priced options without formulas.
Next page
Light

Font size:

Reset

Interval:

Bookmark:

Make

Similar books «Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?»

Look at similar books to Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?. We have selected literature similar in name and meaning in the hope of providing readers with more options to find new, interesting, not yet read works.


Reviews about «Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets?»

Discussion, reviews of the book Lecturing Birds on Flying: Can Mathematical Theories Destroy the Financial Markets? and just readers' own opinions. Leave your comments, write what you think about the work, its meaning or the main characters. Specify what exactly you liked and what you didn't like, and why you think so.