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POSIWID: The Purpose of a System Is What It Does
daringfireball.net
The purpose of a system is what it does (POSIWID) is a heuristic in systems thinking coined by the British management consultant Stafford Beer, who stated that there is “no point in claiming that the purpose of a system is to do what it constantly fails to do”.
I think this is very apt, but in the context of Apple and their purported best-in-class user experience, attention to detail, and empathy for the user. That ship has sailed, friends.