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February 21, 2014

Latest Posts from Economist's View

Latest Posts from Economist's View

Paul Krugman: The Stimulus Tragedy

Posted: 21 Feb 2014 12:24 AM PST

The stimulus package was more effective than people realize:

The Stimulus Tragedy, by Paul Krugman, Commentary, NY Times: Five years have passed since President Obama signed the American Recovery and Reinvestment Act — the "stimulus" — into law. With the passage of time, it has become clear that the act did a vast amount of good. It helped end the economy's plunge; it created or saved millions of jobs; it left behind an important legacy of public and private investment.
It was also a political disaster. And the consequences of that political disaster — the perception that stimulus failed — have haunted economic policy ever since.
Let's start with the good stimulus did..., most careful studies have found evidence of strong positive effects on employment and output.
Even more important, I'd argue, is the huge natural experiment Europe has provided... You see,... austerity led to nasty, in some cases catastrophic, declines in output and employment. And private spending in countries imposing harsh austerity ended up falling..., amplifying the direct effects of government cutbacks.
All the evidence, then, points to substantial positive short-run effects from the Obama stimulus. And there were surely long-term benefits, too: big investments in everything from green energy to electronic medical records.
So why does everyone ... except those who have seriously studied the issue ... believe that the stimulus was a failure? Because the U.S. economy continued to perform poorly — not disastrously, but poorly — after the stimulus went into effect.
There's no mystery about why: America was coping with the legacy of a giant housing bubble. ... And the stimulus was both too small and too short-lived...
There's a long-running debate over whether the Obama administration could have gotten more. The administration compounded the damage with excessively optimistic forecasts, based on the false premise that the economy would quickly bounce back...
But that's all water under the bridge. The important point is that U.S. fiscal policy went completely in the wrong direction after 2010. With the stimulus perceived as a failure, job creation almost disappeared from inside-the-Beltway discourse, replaced with obsessive concern over budget deficits. Government spending, which had been temporarily boosted both by the Recovery Act and by safety-net programs like food stamps and unemployment benefits, began falling... And this anti-stimulus has destroyed millions of jobs.
In other words, the overall narrative of the stimulus is tragic. A policy initiative that was good but not good enough ended up being seen as a failure, and set the stage for an immensely destructive wrong turn.

Links for 02-21-2014

Posted: 21 Feb 2014 12:03 AM PST

'Moore's Law: At Least a Little Longer'

Posted: 20 Feb 2014 12:17 PM PST

Tim Taylor:

Moore's Law: At Least a Little Longer: One can argue that the primary driver of U.S. and even world economic growth in the last quarter-century is Moore's law--that is, the claim first advanced back in 1965 by Gordon Moore, one of the founders of Intel Corporation that the number of transistors on a computer chip would double every two years. But can it go on? Harald Bauer, Jan Veira, and Florian Weig of the McKinsey Global Institute consider the issues in "Moore's law: Repeal or renewal?" a December 2013 paper. ...
The authors argue that technological advances already in the works are likely to sustain Moore's law for another 5-10 years. This As I've written before, the power of doubling is difficult to appreciate at an intuitive level, but it means that the increase is as big as everything that came before. Intel is now etching transistors at 22 nanometers, and as the company points out, you could fit 6,000 of these transistors across the width of a human hair; or if you prefer, it would take 6 million of these 22 nanometer transistors to cover the period at the end of a sentence. Also, a 22 nanometer transistor can switch on and off 100 billion times in a second. 
The McKinsey analysts point out that while it is technologically possible for Moore's law to continue, the economic costs of further advances are becoming very high. They write: "A McKinsey analysis shows that moving from 32nm to 22nm nodes on 300-millimeter (mm) wafers causes typical fabrication costs to grow by roughly 40 percent. It also boosts the costs associated with process development by about 45 percent and with chip design by up to 50 percent. These dramatic increases will lead to process-development costs that exceed $1 billion for nodes below 20nm. In addition, the state-of-the art fabs needed to produce them will likely cost $10 billion or more. As a result, the number of companies capable of financing next-generation nodes and fabs will likely dwindle."
Of course, it's also possible to have performance improvements and cost decreases on chips already in production: for example, the cutting edge of computer chips today will probably look like a steady old cheap workhorse of a chip in about five years. I suspect that we are still near the beginning, and certainly not yet at the middle, of finding ways for information and communications technology to alter our work and personal lives. But the physical problems and  higher costs of making silicon-based transistors at an ever-smaller scale won't be denied forever, either.

'Random Variation'

Posted: 20 Feb 2014 08:31 AM PST

James Kwak:

... I used to believe that no one could beat the market: in other words, that anyone who did beat the market was solely the beneficiary of random variation (a winner in Burton Malkiel's coin-tossing tournament). I no longer believe this. I've seen too many studies that indicate that the distribution of risk-adjusted returns cannot be explained by dumb luck alone; most of the unexplained outcomes are at the negative end of the distribution, but there are also too many at the positive end. Besides, it makes sense: the idea that markets perfectly incorporate all available information sounds too much like magic to be true. ...

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