Nenagradno vprašanje: katera izmed predpostavk v tem modelu velja v realnem svetu?
In New Keynesian DSGE models the natural rate has a specific definition: it is the real interest rate (the nominal interest rate adjusted for expected inflation) that would prevail in a hypothetical environment, where nominal prices and wages can adjust immediately, and where mark-ups in the goods and labour market are constant. Because output is at its potential or natural level when nominal price and wage rigidities are absent, the natural rate is a counterfactual rate that would occur only if all the economy’s resources were fully employed as set out in Del Negro et al. (2015).
In zakaj potem tak DSGE model uporabljati za oceno česarkoli, ne samo “naravne obrestne mere“?!?