This is an important chapter.
This chapter takes us past Keynesian macroeconomics and introduces
some of the modern add-ons and revisions to Keynes.
In particular the subject of supply-side inflation is covered ( pg
579-580).
The short-run aggregate supply curve (pg 568 and following) should be emphasized.. The long-run aggregate supply curve (pg. 573) should be looked at but not memorized.