Tech Lead Journal

#237 - Tackling AI and Modern Complexity with Deming's System of Profound Knowledge - John Willis

24 snips
Nov 3, 2025
John Willis, an influential DevOps expert and co-author of The DevOps Handbook, delves into applying Deming's System of Profound Knowledge to today's challenges, especially in AI. He explores Deming's four lenses—knowledge theory, systems thinking, variation understanding, and psychology—in managing complexity. The conversation addresses the dangers of polymorphic AI, the importance of treating AI as 'alien cognition,' and how historical incidents highlight the cost of ignored alerts. John also emphasizes fostering a learning culture in organizations as they navigate AI adoption.
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INSIGHT

Four Lenses For Understanding Complexity

  • Deming’s System of Profound Knowledge uses four lenses to understand complexity: theory of knowledge, variation, psychology, and systems thinking.
  • Combining these lenses reveals causes that single-method approaches miss.
ADVICE

Shift Security Toward Adversary Analysis

  • Adopt continuous improvement and adversary analysis in security instead of chasing CVEs only.
  • Experiment with measurements that reflect adversaries and reduce their success, not just patch counts.
INSIGHT

Incidents Are Unplanned Investments

  • Incidents are 'unplanned investments' and small ignored alerts can cause catastrophic failures.
  • Treat recurring low-priority alerts seriously because they may hide systemic risks.
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