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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One potential problem with any far and wide ambling tour of the economy is ambling too far or too wide. Such is the case as we find ourselves in the quaint and courteous Republic of Northwest Queoldiola. While we're here, let's take the opportunity to explore the quaint and courteous economy of the Northwest Queoldiola. Our impromptu economic expedition is faced with an immediate roadblock. I have a pocket filled with good old U. S. dollar bills, but the quaint and courteous people of Northwest Queoldiola don't trade their wares for good old U. S. dollar bills. They prefer the quaint and courteous Northwest Queoldiolan currency, the queold. All we need to do is trade my good old U. S. dollar bills for quaint and courteous queolds.
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Today, you are likely to spend a great deal of time searching for rummage sales looking to buy either a rotisserie oven that can also toast bread or a flower arrangement in a coffee cup for your father. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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This isn't me! What am I?

-- Mother Teresa of Calcutta, humanitarian

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