I think one of the big economic lessons from the great depression is how something like that can snowball on itself. Economic downturn -> people lose their jobs -> as a consequence of reduced income (or no income) people spend less -> because people aren’t buying as much, businesses suffer, and have less need for labor, more people are lose their jobs -> less spending etc etc. More learned this from my macro class but it’s interesting how programs like Unemployment payments or Social Security kind of help stop things from spiraling out of control like that by giving people money to spend even when they lose their jobs. I always understood the function of those programs on an individual level but I never realized that they are why the business cycles of today are less violent.