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VARIABLE INPUT: An input whose quantity can be changed in the time period under consideration. This should be immediately compared and contrasted with fixed input. The most common example of a variable input is labor. A variable input provides the extra inputs that a firm needs to expand short-run production. In contrast, a fixed input, like capital, provides the capacity constraint in production. As larger quantities of a variable input, like labor, are added to a fixed input like capital, the variable input becomes less productive. This is, by the way, the law of diminishing marginal returns.
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SIXTH RULE OF IGNORANCE The sixth of seven basic rules of the economy, stating that obtaining information is a costly activity that requires resources with alternative uses. As such, no one knows everything and everyone is ignorant about something.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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"Anyone who has never made a mistake has never tried anything new. " -- Albert Einstein, physicist
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VSE
Vancouver Stock Exchange (Canada)
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