What new developments starting in the 1980s have changed macroeconomic thought?

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :

i think this is true i hope this

forbearance of student loan payments. under forbearance, your loan payments are postponed (or reduced) but interest continues to accrue during the period of forbearance. if you don't pay the interest during that period, the interest may be “capitalized,” which means it is added to your principal balance.