The Corbett Report Podcast

The Purpose Of a System Is What It Does

11 snips
Apr 21, 2026
A clear unpacking of the aphorism that a system’s purpose is revealed by what it actually does. Talks about feedback and control in systems and the origin of the POSIWID idea. Uses vivid examples from education, politics and the Nobel Peace Prize to show rhetoric versus outcomes. Applies the lens to MAGA, the Iran war and disruptions around the Strait of Hormuz.
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INSIGHT

Purpose Is Revealed By Outcomes

  • The aphorism POSIWID: the purpose of a system is what it does, not what its designers claim.
  • Stafford Beer framed this in Diagnosing the System for Organizations, arguing result/state reveals purpose, not rhetoric.
ANECDOTE

Doohickey Example Shows Rhetoric Versus Result

  • Corbett's doohickey story shows promised benefits can mask a different function.
  • The device sold as self-improvement produced only one measurable result: it separated the buyer from their money.
INSIGHT

Education System Purpose Seen In Outcomes

  • Apply POSIWID to the US education system by observing its outcomes rather than its stated goals.
  • Given pervasive declines (illiteracy, reliance on AI, basic skills loss), the system's purpose appears to be dumbing down children.
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