Strong dependencies among classes (or components) are definitely the villains within a software architecture. The opposite of strong dependencies, ie completely decoupled architectures, do not exist however, because such a utopian schema would actually result in no messages being exchanged among objects at all. Architects should focus on minimizing strong dependencies, designing only well-planned ones. I refer to the latter as healthy dependencies, and they undoubtedly bring a lot of benefits to a system.

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