SUNSPOTS
Sunspots
In economics, the term sunspots usually refers to an extrinsic random variable, that is, a random variable that does not directly affect economic fundamentals . Sunspots can also refer to the related concept of extrinsic uncertainty, that is, economic uncertainty that does not come from variation in economic fundamentals. David Cass and Karl Shell coined the term sunspots as a suggestive and less technical way of saying "extrinsic random variable".The above text is a snippet from Wikipedia: Sunspots (economics)
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