In the economic turmoil of
the last few years, this blog, along with others, has suggested that those
economists involved may not have been quite right, indeed a good many may have
been quite wrong.
This article on economic modelling appears to agree with this, if I understand the complex
wording correctly. It is not long but
intriguing. The conclusions are:
Quote:
Our
methodology points out the lack of proper modelling of financial and labour
markets in the representative macroeconomic model during the financial crisis,
which may help shed light on Ng and Wright’s (2013) results, and suggests that
additional work to include more labour and asset market frictions in the models
would be especially useful.
Our
empirical findings confirm the conventional wisdom that appears in much of the
existing literature, indicating that model mis-specification cannot be ignored
in policy analyses.
Furthermore,
our techniques might prove to be useful more generally to guide researchers in
improving their models.
Unquote.
To
put it crudely, essentially our financial systems seem to have been based on
thinking which claims that the best way to win the lottery is to put in the
winning numbers from last week.
In
the meantime the blog Financial Crimes on Tuesday 25 November suggests that the
National Lottery and Euromillions these days could be a superior way of
investing.
"model mis-specification cannot be ignored in policy analyses"
ReplyDeleteIn other words, the models don't work but we'd like to be paid for improving them however long it takes. Climate models don't work either.