Monday, September 28, 2009

OMG!! This is the most PERFECT explanation I've found for logs

"Natural Log is about time

  • e^x lets us plug in time and get growth.
  • ln(x) lets us plug in growth and get the time it would take.

For example:

  • e^3 is 20.08. After 3 units of time, we end up with 20.08 times what we started with.
  • ln(20.08) is about 3. If we want growth of 20.08, we’d wait 3 units of time (again, assuming a 100% continuous growth rate)."

Long story short: log finds time, e finds rate

For more check out http://betterexplained.com/articles/demystifying-the-natural-logarithm-ln/

Tuesday, September 15, 2009

If brokerage and banking are "systemically important," they cannot be married to proprietary trading - Zingales

http://online.wsj.com/article/SB10001424052970203440104574403144004792338.html
Blame it on Lehman?
Pay special attention to the chart.

Econophysics?

http://www.nytimes.com/2009/09/13/business/13unboxed.html
“We’re going to see three-dimensional financial modeling and eventually N-dimensional modeling,”
Goodbye finance, welcome calculus III

Bonus skirmish

http://www.nytimes.com/2009/09/15/business/15bank.html?_r=1&8au&emc=au

It's not as much the fact that Merrill paid bonus that gets to me, but that it seeks to settle the issue for $33m of more shareholder's money. You rob them once.. and oh wait to make up for that rob them twice

Monday, September 14, 2009

Bermuda Triangle, a manufactured mystery?



10 years ago, I remember being fascinated by Charles Berlitz's book on the triangle of death between Florida, Peurto Rico and Bermuda.. Recent studies point that these disappearances may have little to do with our alien friends or electromagnetic fields.
http://news.bbc.co.uk/2/hi/uk_news/8248334.stm
http://edugreen.teri.res.in/explore/renew/bermuda.htm

Wednesday, September 9, 2009

art, transformed

http://blog.art21.org/2009/09/01/transformation-of-williamsburg/

http://lorenmunk.com/writing/groundhog_day.html

"Perhaps an aspect of Post-Modernist thought is the attempt to transcend our obsession with novelty and the post-neo-newest, to jump the timeline and see history as a ball rather than a strip, an ocean rather than a river. After all, the Gothic style was vibrant for three hundred years. Surrealism, though perhaps not quite so durable, keeps coming back like a persistent skin rash. And rather that asking ourselves if it’s a failure of artistic originality that an image might echo something done decades ago, we might rather ponder what kinds of shared impulses an artist in Paris in the 1930s, San Francisco in 1969, or Brooklyn in 2008 would lead to such similar results?"

Saturday, September 5, 2009

My favorite excerpt on time relation from Sophie's Choice (Styron)

[quote]"Precisely at the same hour in which Mehring and Langner were being done to death, the overwhelming plurality of human beings, two miles away on the Polish farms, five thousand miles away in New York, were sleeping or eating or going to a film or making love or worrying about the dentist. This is where my imagination balks. The orders of simultaneous experience are so different, so irreconcilable to any common norm of human values, their coexistence is so hideous a paradox - Treblinka is both because some men have built it and almost all other men let it be - that I puzzle over time.." ..
.."This notion of different orders of time simultaneous but in no effective analogy or communication" Steiner continues, "may be necessary to the rest of us, who were not there, who lived as if on an other planet." Quite so - especially when (and the fact is often forgotten) for millions of Americans the embodiment of evil during that time was not the Nazis, despised and feared as they were, but the legions of Japanese soldiers who swarmed the jungles of the Pacific..[].. The nexus between these "different orders of time" is, of course - for those of us who were not there - someone who was there, and this brings me back to Sophie. [unquote]

"This notion of different orders of time simultaneous but in no effective analogy or communication" ... "may be necessary to the rest of us, who were not there, who lived as if on an other planet."
It is reasonable to assume that travel and pursuit of knowledge bridge this difference in orders of time. One becomes a 'nexus', aware of what the other world beholds. But these 'other worlds' are innumerable. The more you learn of something the more you realize that there is a vaster ocean of knowledge and experiences of which you are blissfully unaware. I find it impossible that one could find a certain root cause to a certain event. After all, aren't these events driven by micro level choices, the micro by nano, (and eventually somewhere down the hierarchy of stimulants) the sub-atomic activity that quantum mechanics assigns to randomness? The larger events are thus driven by randomness.