You are the type of person who considers shopping an interesting intellectual exercise. Family and friends refuse to let you watch "Jeopardy" with them. Today, you are likely to spend a great deal of time at a dollar discount store looking to buy either a set of serrated steak knives, with durable plastic handles or a pair of blue silicon oven mitts. Be on the lookout for rusty deck screws. 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 410595. 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.

Information is not equally available to everyone. Asymmetric information results because efficient information search inevitably stops short of compete information. Some people obtain more benefits from information than others, are willing to incur higher search costs, and thus end up knowing more. Or they incur lower information search costs and have easier access to the information. In a market, sellers tend to have more information about the good than buyers. Asymmetric information gives rise to adverse selection, moral hazard, and the principal-agent problem. These problems can be lessened through signalling and screening.

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The quiet, peaceful town of Shady Valley has always been a great place for a pedestrian to wander through the workings of the economy. I'm afraid, though, that it's about to end. I've been offered another job -- an opportunity to wander around the streets of the distant mecca of Shady Lane to search out the mysteries of plant pathology. In Shady Lane, the sidewalks are smoother, the crosswalks are better, and the pay is much more lucrative. However, in that Shady Lane is in another time zone and several states away, migration would be my last topic of the day. There's a lot to be gained from this potential relocation of my residence, but it's not without cost. While I ponder this decision, perhaps you can help out by considering the topic of migration.
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