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Friday, May 8, 2009

Stock Market Indexes are Highly Correlated

I have graphed several different stock market indexes including the Dow, NASDAQ, DAX, Nikkei, S&P, Wilshire 5000 and the Hang Seng. In case you don't know, these are three indexes from the US, Germany, Japan and China. This includes the time from the crash in October 2008 to today. We see that attempts to diversify geographically have not worked very well. 




Above is the correlation matrix - click on the table to enlarge. Most of these stock index are very much the same.  The correlation between the Wilshire and the S&P is 99.8% --where 100% is perfect. The least correlated pair, the Hang Seng and the Dow, have a correlation of 93.5%. You would think the Chinese market would be more distinct from the biggest US companies. 

This shows the world is a global village.

This is interesting and discouraging because the investment practice of REBALANCING, encourages us to put assets in different places, and then shift money between asset groups to get the best return. See William Bernstein's book The Intelligent Asset Allocator. If these geographic markets track each other so closely, this technique can't work very well.

Wednesday, May 6, 2009

Horseshoe Crab Blood, Hemocyanin and Blood Clots

Horseshoe crabs are primitive animals, and I found out yesterday that they have blue blood. That was going to be my post. Look at the cool blue color:

As you can see -- milky blue. The blue color is caused by the hemocyanin in their blood, rather than hemoglobin. Hemocyanin is based on copper rather than iron. It is not uncommon undersea non-vertebrates, being in mollusks and octopus too. There is lots of detail on Wikipedia.

However, it is even more interesting that horseshoe crab blood has an unusual anti-bacterial property. 

Horseshoe crab blood, as discovered by Fred Band in 1956, contains Limulus Amebocyte Lysate  a which causes clots in response to lipopolysacchrides of the kind found in bacteria. The clotting occurs quickly and isolates the bacteria from the rest of the crab. It is useful pharmaceutically to detect bacterial contamination. This can detect roughly 10E6 organisms/ml, depending on the organism and many other factors. Actually this does not sound that sensitive to me, but it seems that other methods are worse.

Recently, this has created a market in wild horseshoe crab blood. The crabs are milked and then released. It seems that it is difficult to culture the cells that produce limulus amebocyte lysate in the lab, and that the wild-caught production will continue for a while.

Friday, May 1, 2009

Talent is an Over-Rated Commodity

Thank you to daughter Michelle, for pointing out this David Brooks post.

I have for years thought that people should focus less on "talent" which is some kind of god-given attribute that pre-defines success, and a great deal more on effort and preparation. People who succeed often build on a base of previous success and high accomplishment. 

I learned this when I was teaching assistant in a college class. People that took related classes first did better, which shows simply that better preparation leads to better results. People that did not have the preparation struggled, and this was very evident in the exam grades. 

David Brooks:

Some people live in romantic ages. They tend to believe that genius is the product of a divine spark. They believe that there have been, throughout the ages, certain paragons of greatness — Dante, Mozart, Einstein — whose talents far exceeded normal comprehension, who had an other-worldly access to transcendent truth, and who are best approached with reverential awe.

We, of course, live in a scientific age, and modern research pierces hocus-pocus. In the view that is now dominant, even Mozart’s early abilities were not the product of some innate spiritual gift. His early compositions were nothing special. They were pastiches of other people’s work. Mozart was a good musician at an early age, but he would not stand out among today’s top child-performers.

What Mozart had, we now believe, was the same thing Tiger Woods had — the ability to focus for long periods of time and a father intent on improving his skills. Mozart played a lot of piano at a very young age, so he got his 10,000 hours of practice in early and then he built from there.

The latest research suggests a more prosaic, democratic, even puritanical view of the world. The key factor separating geniuses from the merely accomplished is not a divine spark. It’s not I.Q., a generally bad predictor of success, even in realms like chess. Instead, it’s deliberate practice. Top performers spend more hours (many more hours) rigorously practicing their craft.

The recent research has been conducted by people like K. Anders Ericsson, the late Benjamin Bloom and others. It’s been summarized in two enjoyable new books: “The Talent Code” by Daniel Coyle; and “Talent Is Overrated” by Geoff Colvin.

If you wanted to picture how a typical genius might develop, you’d take a girl who possessed a slightly above average verbal ability. It wouldn’t have to be a big talent, just enough so that she might gain some sense of distinction. Then you would want her to meet, say, a novelist, who coincidentally shared some similar biographical traits. Maybe the writer was from the same town, had the same ethnic background, or, shared the same birthday — anything to create a sense of affinity.

This contact would give the girl a vision of her future self. It would, Coyle emphasizes, give her a glimpse of an enchanted circle she might someday join. It would also help if one of her parents died when she was 12, infusing her with a profound sense of insecurity and fueling a desperate need for success.

Armed with this ambition, she would read novels and literary biographies without end. This would give her a core knowledge of her field. She’d be able to chunk Victorian novelists into one group, Magical Realists in another group and Renaissance poets into another. This ability to place information into patterns, or chunks, vastly improves memory skills. She’d be able to see new writing in deeper ways and quickly perceive its inner workings.

Then she would practice writing. Her practice would be slow, painstaking and error-focused. According to Colvin, Ben Franklin would take essays from The Spectator magazine and translate them into verse. Then he’d translate his verse back into prose and examine, sentence by sentence, where his essay was inferior to The Spectator’s original.

Coyle describes a tennis academy in Russia where they enact rallies without a ball. The aim is to focus meticulously on technique. (Try to slow down your golf swing so it takes 90 seconds to finish. See how many errors you detect.)

By practicing in this way, performers delay the automatizing process. The mind wants to turn deliberate, newly learned skills into unconscious, automatically performed skills. But the mind is sloppy and will settle for good enough. By practicing slowly, by breaking skills down into tiny parts and repeating, the strenuous student forces the brain to internalize a better pattern of performance.

Then our young writer would find a mentor who would provide a constant stream of feedback, viewing her performance from the outside, correcting the smallest errors, pushing her to take on tougher challenges. By now she is redoing problems — how do I get characters into a room — dozens and dozens of times. She is ingraining habits of thought she can call upon in order to understand or solve future problems.

The primary trait she possesses is not some mysterious genius. It’s the ability to develop a deliberate, strenuous and boring practice routine.

Coyle and Colvin describe dozens of experiments fleshing out this process. This research takes some of the magic out of great achievement. But it underlines a fact that is often neglected. Public discussion is smitten by genetics and what we’re “hard-wired” to do. And it’s true that genes place a leash on our capacities. But the brain is also phenomenally plastic. We construct ourselves through behavior. As Coyle observes, it’s not who you are, it’s what you do.

ipod Shuffle Gen3 - Final Chapter


I gave up on my iPod Generation 3, or Gen3, and returned it to Apple. As you may recall from previous posts, I have had a problem with the volume control on the earbud cord when it got damp. It always was damp because I wear it exercising, and it is sweaty from either my shoulder or my neck. While I am flattered that I am a rough and tough enough jock to foul a piece of electronic equipment, I did want the iPod to work. 

Apple had two work-arounds, to loop the cord to hold the control off my shoulder, and to reduce the maximum sound in iTunes. Neither of these worked well. The loop always slipped, and I simply needed the sound to be louder sometimes that others. 

I was dealing with a service rep in the engineering department since this was a problem that t
Apple was trying hard to fix. He offered me an nice iPod Nano instead. This was a Gen 4 Nano with 8GB, so that was a better deal -- about twice as expensive.

Now I have my Nano, and it seems to work well. I hope that its larger size is not going to be an issue. The Shuffle hangs from my shirt. I am going to have to buy a holder for the Nano. 


Thursday, April 30, 2009

Swine Flu

Swine flu has been on my mind, and all over the news. We just got our first case here in Michigan.  Surprisingly there have only been 257 cases confirmed by the World Health Organization

This is surprising because the news has about 200 deaths in Mexico. What this really shows is that the better public health system in the US is producing more lab test results than in the US. 

As of 30 April, there are only 257 confirmed cases worldwide: 109 in the US, 97 in Mexico, 19 in Canada, Spain 13, UK 8, Germany 3, New Zealand 3, Israel 2, Switzerland and Netherlands 1.

The bright side is that H1N1 Swine flu may be just like any other flu. As more time passes, there is less to be frightened about. The ratio of deaths to infections get less and less. 

H1 stands for hemagglutinin 1 and N1 stands for neuraminidase 1. There are 16 types of hemagglutinin, numbered H1 through H16, and 9 types of neuraminidase, numbered N1 through N9. That makes 144 possible combinations of the virus, a constantly changing challenge for prevention or treatment. citation.


Sunday, April 26, 2009

Manufacturing in the United States


Mark Perry's Carpe Diem, had another excellent insight about the competitiveness of manufacturing industries in the United States. Manufacturing in the United States has more than doubled in the last thirty years as measure by output. What has decreased is manufacturing manpower, by almost a third. 

This has been due to increases in productivity; chiefly automation and computerization. 

As someone who works in a manufacturing industry, it is nice to see what I am not actually on the wrong side of history. 

Saturday, April 25, 2009

The Tomatoes are in the Ground: Wall-o-Waters

In keeping with the Spring mood, I planted my tomatoes today. 

I use Wall-o-Water, which are these water-filled plastic tents. They help root development, and plants do better than sister plants that I keep under the lights inside. 

The Wall-O-Water protects the plants by sacrifically freezing before frost could damage the plant inside. They also help warm the plant like a little green house during the day. 

I have three variety's this year: Burpee Big Boy, Yellow Pear, and Black Cherry. 

Spring Comes to Michigan


Everyone knows that the Spring will come, but it is always a surprise when it actually arrives. 

Rather than blogging today, I am going to plant vegetables and bushes -- no flowers this week. 

The temperature got up to 84F today, so that was great. The trees really leafed out in less that 24 hours.

One of the best things about Southgate, Michigan is that these Spring days are warmer than they were in our previous town in Wisconsin where Lake Michigan lake breezes would keep the temperature down. It was twelve degrees COLDER there than here!

Believe me, in the Spring you want every degree.

Wednesday, April 22, 2009

IPod Shuffle Gen3 - Volume Control Work Around

The iPod fix of wrapping the controller in Teflon tape did not work, though I can't say why. It really should have. 

Chris Peters (don't know if that is his real name) from Apple called me, which is pretty remarkable for a Tech Support guy. Anyway. He said runners are having problems with sweat getting the controller and preventing good volume control. 

First of all, it is good to be in a class with elite jocks like these with sweaty enough shoulders to foul their iPods. I mean what else is there to aspire to now?


Second, there were two workarounds. First is to make a little loop on the cord to hold the controller up higher so it does not contact the shoulder. I use a little piece of tape. 

Third, you can set the maximium volume using the software -- at the bottom of the summary page. At the same time, click "Enable Sound Check" this will make different songs have about the same volume --important if you are going to go running without volume control. 

Saturday, April 18, 2009

Repairing and Waterproofing an iPod Shuffle Generation 3


My Shuffle Gen3 has had issues with volume control. If you have been following previous posts, then you know that the cause is moisture in the cord-mounted control. 

My solution is like this:

1. Dry out the control. I recommend putting in the sun. If the sun is shining, it is far better than a hair drier. Don't microwave it. 

2. Get some teflon tape. It is at the home center or hardware store in the plumbing department. It is used for sealing connections in water pipe. 

3. Wrap the teflon tape carefully around the control, starting about 3/8 inch onto the wire, and then spiralling across the control. Move to the other side and overlap the other edge. The teflon tape stretches, so twist it around the end where the wire enters the control. 



4. I put on two layers.