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Information is data within a context. On the expression “3 degrees Celsius”, “3” is data and “degrees Celsius” is the context. In usability terms, information is often referred to what the user needs: accurate information instead of more information which might lead to information overflow.

In the context of information theory, the value of the information contained in a message is refered to as entropy, which "is a measure of the uncertainty in a random variable". ( http://en.wikipedia.org/wiki/Entropy_%28information_theory%29, retrieved 2013-01-13)

Questions with the often are concerned with how to present information and convey meaning (also see ). Questions about hierachy or relationship of information are often more specifically tagged .

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