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Mandelbrot


Benoit Mandelbrot
20 Nov 1924 - 14 Oct 2010

I conceived and developed a new geometry of nature and implemented its use in a number of diverse fields. It describes many of the irregular and fragmented patterns around us, and leads to full-fledged theories, by identifying a family of shapes I call fractals.
~Benoit Mandelbrot, 1982

“A Greek among Romans” is what author and disciple Nicholas Taleb called him. A fitting label for someone who spent most of his life working on a mathematical philosophy no one else seemed interested in investigating. “Until a few years ago, the topics of my PhD were unfashionable,” claimed Mandelbrot, “but they are very popular today.” In fact, his specialty has blossomed into the field of Complexity Science, branching out with limitless application.

Mathematician Benoit Mandelbrot died earlier this month from pancreatic cancer. The extent to which this particular blog is indebted to his work and ideas is yet to be seen. That vast wealth resides in what Taleb would call the “antilibrary” – what we have yet to learn. However, this much is known: Mandelbrot’s work as a type of evangelist brought about an awareness to a transformative way of observing the world around us.

Over the past week and a half since Mandelbrot’s death, numerous articles about his life and work have populated the blogosphere. Listed below are some of the most informative ones. As for this post, it is only a prelude to some of the things we hope to find in the antilibrary concerning Mandelbrot.

Clouds are not spheres, mountains are not cones, coastlines are not circles, and bark is not smooth, nor does lightning travel in a straight line.

As part of our “The Aesthetics of Chaos” series, we’ll be taking a look at the various different forms of art and how the “fractal geometry of nature,” as Mandelbrot called it, gives us an aesthetic guide. One artist in particular, the Australian painter Robert Berry, will be sharing with us some of his insights on the topic of fractals, nature and aesthetics. Many of these ideas stem from what we have learned about fractals from Mandelbrot. While he was a mathematician, Mandelbrot did not see distinctions between fields of study as most of his peers did. One of the reasons he did not continue as a mathematician in France, he claimed, was because of their “rage against images.” Were it not for his openness to images, he would not have discovered the beautiful intricasies of what we now call The Mandelbrot Set. Insights gained from fractals fluidly link aesthetics to science. “Think of color, pitch, loudness, heaviness, and hotness,” wrote Mandelbrot. “Each is the topic of a branch of physics.”

My fate has been that what I undertook was fully understood only after the fact.

In the following 2008 PBS interview, Mandelbrot and Taleb warned about the increasing fragility of our complex world. When asked to make predictions about the future, Mandelbrot simply replied “anything is possible,” while warning about the importance of vigilance. In an up-coming book review, we will be taking a look at the new second edition of Taleb’s The Black Swan: The Impact of the Highly Improbable. Many of Taleb’s ideas proceed directly from Mandelbrot’s work.

An extraordinary amount of arrogance is present in any claim of having been the first in inventing something,

One of the great insights stemming from his study of fractals was Mandelbrot’s view that recurrence is seen throughout nature. Even the above quote is a recurrence of Solomen’s lament “there is nothing new under the sun.” Part of our Chaos Journal project is to chart recurrence at the level of an individual. (If society is truly fractal in nature, then the smallest “pixel” of society is the individual.) At the Potsdam Institute for Climate Impact Research, Dr. Norbert Marwan is a pioneer in studying recurrence in complex systems. Dr. Marwan has graciously agreed to allow The Renaissance Mob to use his CRP toolbox (http://www.pik-potsdam.de/) to study recurrence as a tool for understanding both self and society.

Thanks to Mandelbrot’s study of fractals, roughness and chaos, we continue to learn about aesthetics, addressing fragility, and understanding recurrence in life and society.

Other articles about Mandelbrot
Benoit Mandelbrot (RIP) and the quest for a theory of really everything By John Horgan Oct 18, 2010

Benoît Mandelbrot, Novel Mathematician, Dies at 85 By JASCHA HOFFMAN Published: October 16, 2010

Mathematician Benoît Mandelbrot dies aged 85 (Wikinews)

Mandelbrot, father of fractals, dies at 85 Sunday 17 October 2010

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Life with a Rock Star


I find it amusing that people think I’m together… because I’m the most untogether person I know. In the band, they just say, ‘Here comes chaos.’
~Bono, U2

In the past few decades, Chaos Theory, along with his “backup singers” The Fractals, has become a huge rock star. He’s created cool art, starred in movies and even dabbled in the music industry (with Brian Eno, for instance). Beyond pop culture, he has applied himself in just about every area of science there is: from medical research (studies in lung disease) to computer science (the study of complex systems at the Santa Fe Institute). In fact, the only area of study scientists have had trouble applying the Chaos Theory to is… anthropology, the study of humans. Why? The short answer might be stated simply: we’re just too darn chaotic.

You see, the name “Chaos Theory” is somewhat of a misnomer. Like all good talent agents, mathematician Benoit Mandelbrot humbly admits that he did not create Chaos & The Fractals, he simply discovered them. What he was studying at the time were cotton prices in the stock market. What he found in that chaotic data were recurring patterns. In every study Mandelbrot has done since, he has begun with chaos and ended with order. But… “The Order Theory” just wouldn’t do for a rock star. It needed a stage name: “Chaos” has appeal to a …wider demographic.

So why doesn’t Chaos like to play with humans? To understand, we must go backstage and visit the Chaos “changing room.” It’s there we find that Chaos is actually a pretty neat fellow. In fact, we learn, the wild-and-crazy-guy bit is all an act (another misunderstood artists). Here are some of the consistent principles he abides by:

    Highly Sensitive to Initial Conditions- Does Chaos get “butterflies” in his stomach before performing? Darn right he does! If he gets a lukewarm reception on the red carpet before the show, it will affect his performance on stage. Like most primadonnas, Chaos is temperamental. He goes by first impressions, just like the old saying, “The way it begins is the way it goes.”

      Deterministic- From the very start, Chaos was destined to be a star. It was his destiny. With Chaos, those “inital conditions” we just spoke about determined everything that was to happen in Chaos’s entire life. He didn’t have a choice in the matter; his life was determined from the outset.

        Recursion- Chaos likes to say “practice like you perform.” In fact, he practices constantly. His whole life is a model of each period of his life, which is a model of each set of performances, which is a model of each gig, which is a model of each song, which is a model of each “lick” he plays, which is a model of each note within the lick, which is a model of the overtone series, which is a model of… well, you get the idea.

          Self-organizing/Emergent- It may seem contradictory, given what we just said about recursion, but Chaos is the king of improv. He may be recursive, but he doesn’t do much planning. He likes to say, “Things just work themselves out,” and he’s right! From chaotic beginnings his life has become organized and structured.

            Intractable- If you’ve seen the mockumentary “This is Spinal Tap” you know that rock stars are difficult to manage. In fact, Chaos has burned through every manager he’s ever had. This is because he’s virtually (although not entirely) unpredictable. But that’s also why he’s a great artist. So… it’s complicated, or better yet… “complex.”

            The Mandelbrot SetIt’s a little ironic to be anthropomorphizing The Chaos Theory when it has this problem with humans we keep ignoring. Well, no more! Enter randomness, Chaos’s archrival. All the beautiful designs Mendelbrot and others have made with Chaos & The Fractals assumes the absence of random elements. Something is “random” when it has no aim or purpose. The “Mandelbrot Set” (pictured left) is computer generated with no Randomness.

            Within the human life all elements of chaos are present: it’s influenced by its beginnings, it is deterministic, and it’s intractable. Into our perfectly planned lives comes Randomness. You thought Chaos was corrupting your children? Wrong! Randomness crashes “after-show” party and sends the perfectly designed Fractals in a completely different direction.

            In the next few months I will be keeping a “Chaos Journal” here on the blog which will chart Chaos and Randomness in my life. (Not that my life is of any particular interest – other than being a little more chaotic that most.) This is a first step to a larger project involving more people. In fact, you’re invited to join me and make your own Chaos Journal and post your comments.

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