Showing posts with label Economics. Show all posts
Showing posts with label Economics. Show all posts

Friday, March 13, 2009

Disequilibrium

Klein on Summers:
That, at least, is how it should go. But at the moment, the normal market processes are broken. "It was a central insight of Keynes’ General Theory that two or three times each century, the self-equilibrating properties of markets break down as stabilizing mechanisms are overwhelmed by vicious cycles. And the right economic metaphor becomes an avalanche rather than a thermostat. That is what we are experiencing right now." Summers went on to tick off five of the mechanisms that seem to be feeding on themselves rather than being tamed by the market's Econ 101 tendency towards balance:


* Declining asset prices lead to margin calls and de-leveraging, which leads to further declines in prices.

* Lower asset prices means banks hold less capital. Less capital means less lending. Less lending means lower asset prices.

* Falling home prices lead to foreclosures, which lead home prices to fall even further.

* A weakened financial system leads to less borrowing and spending which leads to a weakened economy, which leads to a weakened financial system.

* Lower incomes lead to less spending, which leads to less employment, which leads to lower incomes.

Financial intermediation

Very interesting:
An intermediary can "add value" by reducing investors' risk in comparison to disintermediated investment, by for example, investing in a better-diversified portfolio than an investor would. An intermediary can very effectively reduce liquidity risks to investors, again by since idiosyncratic liquidity demands are themselves diversifiable. But risk reduction via these techniques can never reduce risk to zero. In fact, investing via an intermediary can never alter the fact that 100% of invested capital is at risk — business performance is not uncorrelated and projects can fail completely. Also, usually idiosyncratic liquidity demand occasionally become highly correlated, due to bank runs or real need for cash. Statistical attempts to quantify these risks are misleading at best, as the distributions from which inferences are drawn are violently nonstationary — the world is always changing, the past is never a great guide to the future for very long. Fundamentally, the value intermediaries can add by diversifying over investments and liquidity requirements is very modest, and ought to be acknowledged as such.

Wednesday, March 11, 2009

Adam Smith

On trust and markets:
[Adam] Smith explained why this kind of trust does not always exist. Even though the champions of the baker-brewer-butcher reading of Smith enshrined in many economics books may be at a loss to understand the present crisis (people still have very good reason to seek more trade, only less opportunity), the far-reaching consequences of mistrust and lack of confidence in others, which have contributed to generating this crisis and are making a recovery so very difficult, would not have puzzled him.

There were, in fact, very good reasons for mistrust and the breakdown of assurance that contributed to the crisis today. The obligations and responsibilities associated with transactions have in recent years become much harder to trace thanks to the rapid development of secondary markets involving derivatives and other financial instruments. This occurred at a time when the plentiful availability of credit, partly driven by the huge trading surpluses of some economies, most prominently China, magnified the scale of brash operations. A subprime lender who misled a borrower into taking unwise risks could pass off the financial instruments to other parties remote from the original transaction. The need for supervision and regulation has become much stronger over recent years. And yet the supervisory role of the government in the US in particular has been, over the same period, sharply curtailed, fed by an increasing belief in the self-regulatory nature of the market economy. Precisely as the need for state surveillance has grown, the provision of the needed supervision has shrunk.

Sunday, March 8, 2009

Bankers can't be trusted

Obviously.
There is another argument, implicit or explicit, for the nationalisation of banks; we can not trust bankers not to leave with the cash, let alone spend any of the assistance provided by the government in the public interest. Two recent studies that analyse the experience of recent years show that bankers will not hesitate to enrich themselves at the expense of the public if they have the opportunity.

Sunday, February 15, 2009

Karl Marx

Okay, I'm going to start posting random stuff now.

First, Karl Marx on the Taiping Rebellion.