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// Decision Engineering™ Weekly · Substack

One layer of the DIC™ per issue.
Eight issues. Eight institutional failures.

Free to read. Written for boards, CXOs, and practitioners who are beginning to suspect that their institution's decision chain has grown faster than its governance has kept up with.

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// The eight issues — one layer per issue

L1
Purpose — Why does this institution exist, and does every decision reflect it?
When stated purpose and executed logic diverge, the institution is already in drift.
L2
Strategy — Is the strategic intent encoded anywhere decisions actually happen?
Strategy that lives in documents but not in rule engines is aspiration, not governance.
L3
Intent — Does every automated decision know why it is authorised?
Intent at deployment is the single most common missing layer in AI governance.
L4
Rules — Are the rules actually running what the board approved?
Rule version mismatch is the Knight Capital failure. It is also happening quietly in most institutions right now.
L5
Judgment — Who owns the decision when the model makes the call?
Delegated judgment without defined authority scope is ungoverned judgment.
L6
Decision — Can this decision be replayed end-to-end, as it actually happened?
If the answer is no, it should not have been automated. This is the replayability standard.
L7
Outcome — Who owns an outcome that nobody explicitly decided?
Emergent outcomes from compliant individual decisions. The board is responsible. Nobody is accountable.
L8
Feedback — Does the system learn from what actually happened — or from what was reported?
The UK gilt crisis. The SVB run. The feedback loop was closed too late. At network scale, it may never close.

// Published issues — L1 through L4

L1
Issue 001 · Published
Purpose — Why does this institution exist, and does every decision reflect it?
Read →
L2
Issue 002 · Published
Strategy — Is the strategic intent encoded where decisions actually happen?
Read →
L3
Issue 003 · Published
Intent — Does every automated decision know why it is authorised?
Read →
L4
Issue 004 · Published
Rules — Are the rules actually running what the board approved?
Read →
L5–L8
Issues 005–008 · Coming
Judgment · Decision · Outcome · Feedback — the four layers where drift actually lives.
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Also publishing Decision Autopsies, Boardroom Reality Checks, and Notes on programmable financial institutions and governance failure.

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// Disclaimer & Legal Notices

The views, analyses, and perspectives expressed on this site are solely those of Deepak Aggarwal, presented in a personal and independent capacity. They do not represent or reflect the views, policies, or positions of any current or past employer, client, organisation, or affiliated entity.

All institutional case references — including but not limited to SVB, Knight Capital Group, Wirecard AG, Credit Suisse, Wells Fargo, Coutts, Orpea Group, Kaiser Permanente, and NHS entities — are cited solely on the basis of publicly documented regulatory findings, official investigations, court records, parliamentary reports, and other published primary sources. No non-public information has been used. All analysis is independent, educational, and analytical in nature.

Nothing on this site constitutes legal, regulatory, financial, investment, or professional advice of any kind. The Decision Integrity Chain™, Decision Engineering™, FUSE™, STAGE™, and related frameworks are proprietary intellectual property of Deepak Aggarwal. Unauthorised reproduction or commercial use is prohibited.

Case studies and scenarios described as "constructed" or "composite" are hypothetical illustrations based on documented failure patterns. They do not refer to any specific institution, transaction, or individual beyond what is explicitly stated.

© Deepak Aggarwal 2025–2026. All rights reserved. Decision Engineering™ · Decision Integrity Chain™ · DIC™ · FUSE™ · STAGE™ are trademarks of Deepak Aggarwal.