Go to the Hubbard O’Brien Economics Blog and read the following post titled, “How the Effects of the Covid-19 Recession Differed Across Business Sectors and Income Groups,”

https://hubbardobrieneconomics.com/category/chapters/ch12-aggregate-expenditureand-output-in-the-short-run/. There is a considerable amount of material here. How would you summarize the key points of this post in two sentences?