William White (former economist at the Bank of England, the Bank of Canada, and Bank of International Settlements) said:
“The analytical underpinnings of what we [mainstream economists] do are actually pretty shaky. A reflection of that fact, is that virtually every aspect you can think of with respect to monetary policy, about best practice, has changed and changed repetitively over the course of the last 50 years. So, this stuff ain’t science.
“Think about what’s happened recently. One, its completely unprecedented. People are making it up as they go along. This is hardly science – building on the pillars of the past.
“Secondly, what they’ve been making up as they go along actually differs across central banks [The Bundesbank, for example, is fighting the threat of high inflation, whereas the Fed is more concerned about the prospect of deflation]. They can’t even agree amongst themselves about what’s the best way to do things.