Constraints create new possibilities

E continuo a leitura de "Dynamics in Action: Intentional Behavior as a Complex System" de Alicia Juarrero. 

"Limiting or closing off alternatives is the most common understanding of the term "constraint." But if all constraints restricted a thing's degrees of freedom in this way, organisms (whether phylogenetically or developmentally) would progressively do less and less. However, precisely the opposite is empirically observed. Some constraints must therefore not only reduce the number of alternatives: they must simultaneously create new possibilities. We need to understand how constraints can simultaneously open up as well as close off options. To do so, it is helpful to examine another usage of the concept of constraint. Let us return, therefore, to information theory, in which constraints are identified not as in physical mechanics, with physical connections, but with rules for reducing randomness in order to minimize noise and equivocation.
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In a situation of complete randomness where alternatives are equiprobable you could say anything but in fact do say nothing. Random, equiprobable signals are static hiss unable to transmit actual messages. It is true that in situations in which all alternatives are equally likely, potential information or message variety is at its maximum ... But a series of totally random or equiprobable signals is meaningless: no pattern or message is extractable from the disorder. There is none.
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Transmitting or receiving a message requires a clear demarcation between message and background noise. The transmitter as well as the receiver must reduce the randomness in the sequence of signals to a "manageable" level.
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Constraining "the number of ways in which the various parts of a system can be arranged" reduces randomness by altering the equiprobable distribution of signals, thereby enabling potential information to become actual information."

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