Part of my “26 Principles, Revisited” series — checking my own math, nine months into the year I predicted.
The hubris of experience guarantees failure.

Day 12 warned that deep expertise in the old way of doing things becomes the fastest route to irrelevance once the underlying rules change — confidence built on past success is exactly what blinds you to a new failure mode.
2026’s AI rollout scorecard reads like a case study in this. Only about one in eight CEOs report their AI investments delivering both cost savings and revenue growth at once — meaning the great majority of leadership teams that confidently greenlit big AI bets on the strength of their own experience are still waiting to be proven right. Experience got a lot of people in the door. It didn’t get most of them the result.
Verdict: Confirmed — the hubris showed up right on schedule, in the boardroom.
Next up: Principle #13, Wisdom Inversion — revisited.









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