Social Security: a view from the past

Paul Krugman writes:

…in discussions of Social Security it’s often argued that in the program’s early years, nobody could have imagined the increases in life expectancy that have actually occurred, so nobody could have imagined that we’d have as many beneficiaries relative to the number of people of working age. And I thought I knew that this was wrong — that people in the 30s and 40s did know about rising life expectancy, and expected it to continue.

Well, it turns out that Table 9 in the 1945 report (pdf) shows high and low estimates of the population distribution looking forward as far as 2000, which we can compare with the actual population distribution in 2000.

What you can see right away is that the SSA expected a much smaller population than we actually ended up with — the baby boom and immigration weren’t anticipated. But they also expected a somewhat older population than we actually got: their “low” estimate put the ratio of seniors to adults under 65 at 20.8%, almost the same as the actual 21.1%, while the “high” estimate put the ratio at 29.1%. That is, in 1945 the Trustees thought that America would probably be a grayer, older country by 2000 than it actually ended up being.

All this has only limited bearing on the future, as we move into an even older country. But it’s still interesting, at least insofar as it debunks a common Beltway legend.

* * * * *

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Building a YouTube on your own

Jon Jenkins, Director of Corporate Applications at Amazon.com, recently gave a webinar, in which he mentioned that it took two of his software engineers three weeks to build an internal video sharing application called Broadcast, now serving as the back end for Amazon’s corporate video library.

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Paul Krugman on income and longevity

Paul Krugman writes:

I’ve referenced this before, but here’s the Social Security Administration study. Look at Table 4: since 1977, the life expectancy of male workers retiring at age 65 has risen 6 years in the top half of the income distribution, but only 1.3 years in the bottom half.

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Trying out Windows Live Writer…

This post is being written in Windows Live Writer.  Let’s see how it turns out…

I think I like the table feature; tables have always been a hassle to produce in WordPress.  Let’s give it a whirl:

Column One Column Two
Table data in Column One… Table data in Column Two…
More table data in Column One… More table data in Column Two…

Looks workable…

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Technology vs. Jobs

A question from LinkedIn:

How do you view the relationship between Technological Innovation and Job Creation?  A net positive, a net negative, net neutral?

The relationship between technological innovation and job creation is threefold:

  1. Technological innovation creates (relatively few) high-paying jobs for people who develop, deploy, and maintain the new technology (including not only engineers, but salesmen and marketers as well),
  2. Technological innovation makes certain types of jobs obsolete, but
  3. The well-paid engineers, salesmen and marketers have a demand for everything a well-paid person tends to buy, from houses and cars to designer coffees and sushi restaurants to modern health care. Hence, the relevant industries experience job growth. Note that this job growth can occur in both unskilled (retail salespeople) and highly skilled (doctors and nurses) occupations…

As to whether it is a “net positive” or “net negative” process, the answer is, IN TERMS OF WHAT? The sheer number of jobs has steadily increased, as technological progress tends to lead to workforce shifting out of more productive (meaning, highly automated) industries into less productive (meaning, hard to automate) ones.

The effect on wages, meanwhile, has been diverging. Workers who operate expensive machinery (say, locomotive operators) and workers who require extensive training (as in, for example, registered nurses) see their wages increase over time; those who don’t, face wage stagnation in nominal terns and thus its slow deterioration in real terms…

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A neat xcopy trick

Windows has a command-line utility called xcopy, which it inherited from the good old DOS.   This utility is very useful when you need to copy a large number of files, especially if they are organized into an elaborate directory tree.  Out of the box, you can make xcopy copy only files that already exist in the destination location (just use the /U option); strangely, there is no obvious way to do the opposite — to only copy files that do not exist in the destination location.  DOStips.com to the rescue:

for /f %%a in ('xcopy "%source%" "%destination%" /L /Y') do (
  if not exist "%destination%.\%%~nxa" xcopy "%%a" "%destination%" /Y
)

Neat…

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Institutional Investor on high-frequency trading

From Institutional Investor:

Inside the Machine: A Journey into the World of High-Frequency Trading

10 Jun 2010
Michael Peltz

An editor’s journey into the world of high-speed trading and proprietary algorithms that make or break markets.

At 2:45p.m. on Thursday, May 6, George (Gus) Sauter received a frantic call from one of his traders to get in front of a Bloomberg terminal. The Dow Jones industrial average, already down 3.9 percent that day on fears about Greece, was in free fall. In just five minutes the index plunged 573 points. Less than two minutes later, the Dow had rocketed back up 543 points, going on to finish the day down 3.2 percent.

“It was just crazy,” Sauter, chief investment officer of mutual fund giant Vanguard Group, told me a few days later. “I had to go to our fixed-income building, about a five-minute walk from my office. By the time I got there, the market had rallied.”

Crazy, indeed. The aptly named “flash crash” temporarily wiped out more than a half trillion dollars in equity value, shaking what little faith nervous investors had in U.S. markets. Shares of Dow component Procter & Gamble Co., the ultimate defensive blue-chip stock, dropped more than one third in a matter of minutes before recovering almost as quickly, all for no apparent reason. A few other large U.S. companies, including accounting firm Accenture, saw their stocks trade as low as a penny a share, only to close not far from where they had begun the day (nearly $42 a share in the case of Accenture) — again, on no news. By the time the dust settled, a whopping 19.3 billion shares had changed hands, more than twice the average daily U.S. equity market volume this year and the second-biggest trading day ever.

Continue reading

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Smart Grid in China

From Institutional Investor:

Investors Want to Plug Into China’s Smart-Grid Market

01 Apr 2010
Xiang Ji

Beijing’s massive conversion to a smart power grid could just one-up the rest of the world. Savvy entrepreneurs and investors are looking to get a piece of the green action.

When Beijing announced a $585 billion stimulus package in November 2008, Jeffrey Kang spotted an opportunity. The package’s vast investment mandates included one aimed at upgrading the country’s electricity distribution system to a smart grid that would use high-tech meters to precisely match supply with demand in households and offices. The energy savings would be an obvious boon for the planet — but savvy entrepreneurs and investors like Kang also wanted a piece of the green action.

China Electricity Council, a national power industry association, estimates that total spending on the smart grid will hit $40 billion by 2011, although the entire project likely won’t be completed until 2020. An estimated 300 million old electricity meters are to be replaced by smart meters that encourage lower energy use by displaying usage prominently. The meters can also track household energy patterns and adjust distribution accordingly.

The whole smart-grid system — comprising ultrahigh-voltage transmission lines, sensors and smart meters, all connected through computer networks — enhances energy efficiency not only by matching supply and demand, but also by more efficiently managing intermittent renewable energy sources.

Entrepreneurs and investors see great prospects in the conversion to a smart grid. Kang, who is CEO of Nasdaq-listed, Shenzhen-based module supplier Cogo Group, signed a deal in April 2009 to acquire China’s Mega Smart Group, a supplier of parts for smart-meter makers. Kang estimates the deal will generate $20 million in sales in the first year, or about 7 percent of Cogo’s total revenue. And that’s only the start. “Smart meters will be a key driver in our growth going forward,” says Kang. Just last month Yale University said it had invested in Redwood City, California’s Silver Spring Networks, a smart-meter manufacturer planning an IPO in 2010.

SBI Energy, a Rockville, Maryland–based market research firm, forecasts that the smart-grid market will grow from $90 billion in 2009 to $171 billion in 2014. SBI says government and corporate mandates to convert to climate-friendly energy systems will drive the boom.

Vinod Khosla, founder of Khosla Ventures, a Menlo Park, California–based venture capital firm, predicts that the world’s electricity grid will eventually be set up “so that smart transformers are feeding information to smart way stations and talking to smart meters.” VC firms’ interest in smart grids emerged only recently, with investments as of last year totaling $414 million. By contrast, solar power has attracted $1.2 billion of VC funds, according to consulting firm Cleantech Group.

London-based VC firm WHEB Ventures not long ago made a capital injection of an undisclosed sum in PassivSystems, a Berkshire, U.K., company that makes energy management systems that fit into smart grids. “Though it’s still in early stages, smart grid represents a potentially vast global market,” says Megan Bingham-Walker, an associate at WHEB Ventures, which manages £114 million ($170.2 million). President Barack Obama last October granted $3.4 billion in stimulus money to develop smart-grid technology and install upgraded meters in the U.S.; utilities are to match these funds. Europe, meanwhile, has mandated that 20 percent of its energy must come from renewable sources by 2020.

Still, investors looking to plug directly into the smart-grid market may find it difficult to do so. For instance, Robert Metcalfe, a partner at Polaris Venture Partners, a $3 billion, Waltham, Massachusetts–based private equity firm, has been screening energy-management software developers but has yet to write a check. “One of the challenges is that there is no standard to root for, making it hard to recognize the winner,” he laments.

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Include_HTML gets better

I just released version 0.4 of the include_HTML plugin.  Nothing changed in how you use it, so if your installation already works, there’s no pressing need to upgrade.  What did change, however, is how the plugin functions.

Prior to version 0.4, the plugin retrieved external data by using file_get_contents() function.  Some Web hosting companies, however, disable the use of this function on remote URLs for security reasons by setting PHP configuration directive allow_url_fopen to Off; consequently, include_HTML wouldn’t work on systems configired this way.

The alternative, of course, is to use the Client URL (cURL) extension, which would work regardless of allow_url_fopen setting, but may or may not be available on a specific system.

Starting from version 0.4, include_HTML begins by checking if the cURL extension is available on the host system.  If it is, the plugin relies on it to retrieve external data.  If it isn’t, the plugin falls back on the old file_get_contents() mechanism.

It is hoped that this modification would improve the plugin’s portability.  A big thank-you to VickiLH2 for suggesting and testing out the cURL data retrieval.

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Invisible scheduled tasks on Windows XP

Just a note to self: to make a scheduled Windows XP task run invisibly, schedule it to run as NT AUTHORITY\SYSTEM:

Scheduling an invisible task

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