You are the type of person who is usually the brightest person in the room, even when seated in a football stadium filled to capacity. Family and friends generally call the local library when they can't find you, and rightfully so. Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either a pair of leather sandals that won't cause blisters or clothing for your kitty cats. Be on the lookout for letters from the Internal Revenue Service. You should consider shopping at stores or businesses beginning with the letter H, but do not buy any products with a serial number or product code containing the number 095132. Your preferred shopping venue is the Internet. Your special symbol is the exclamation point (!).

As a Purple Smarphin, you are the brightest and most intelligent person you know. And that goes for shopping, too. You know exactly what you want. You know exactly what it costs. You know exactly when and where to buy. But, of course, shopping is only one of the many activities that attracts your intellectual attention. You shop when you need to and buy if have to, but shopping is not the end all of your life.

A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. In Keynesian economics, the aggregate expenditures line is the essential component of the Keynesian cross analysis used to identify equilibrium income and production. Like any straight line, the aggregate expenditures line is characterized by vertical intercept, which indicates autonomous expenditures, and slope, which indicates induced expenditures. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking investment, government purchases, and net exports to the consumption line.

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One pitfall facing any pedestrian who explores the intricate details of the economy is large potholes lurking along the path. LOOK OUT! You can probably expect a few bumps and bruises from abruptly introducing your face to the pavement. But, after the cast hardens and the gashes have been stitched, you can be on your way. A little more experienced, no doubt, but forging ahead in spite of it all. Our economy also steps into an occasional pothole in route to an expanding economic pie. Recession is the nifty term we use for this sort of economic pothole and it will be are our topic for the next few pages. OH NO! LOOK OUT!
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-- Joe Paterno, football coach

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