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# DECISION

The wilful imposition of a constraint on a set of initially possible alternatives. In the extreme case, the choice of one from a set of initially conceivable but after the decision and by virtue of that decision no longer available courses of action, messages, objects, properties, etc. The power of a decision is measured by the dual logarithm of the logical probability of the remaining to the initial set of possibilities (*see* information, law of requisite variety, bit). (Krippendorff)

URL= http://cleamc11.vub.ac.be/ASC/DECISION.html