Why is there no long - run trade - off between unemployment and inflation? Why is disinflation so costly for an economy? Are there ways to reduce these costs? Why wont anyone lend money at a negative...

unemployment and inflation?

Why is disinflation so costly for an economy? Are there

ways to reduce these costs?

Why won’t anyone lend money at a negative nominal

rate of interest? How can this pose problems for

monetary policy?