// The Decision Architect · Deepak Aggarwal
DecisionEngineering

Governance told you who decides.

Nobody engineered what deciding actually means.

Financial Services · Healthcare · Boards · Corporate Governance · Institutional Accountability

Most institutions cannot
explain their own decisions.

Not the ones that went wrong. Many of them.

640 bad loans became 2,592. The dashboard was green the entire time.
Read Autopsy #005 →

Decision Engineering™ closes the gap between what a board mandates and what the institution delivers — before the autopsy.

01// Decision Engineering™ Newsletter
One layer of the DIC™ per issue · Eight issues · Eight institutional failures
L1
Issue #001 · 18 April 2026 · Purpose
When did Purpose leave the room?
Coutts. NHS triage. Two institutions where governance passed and outcomes still failed. Not an AI problem — a decision architecture problem.
Free to read. One issue per layer. Eight layers total. Subscribe on Substack →
02// Latest Notes — Between Issues
Shorter observations · Published when the signal is too urgent to wait
April 2026 · Agentic Banking

Apollo Gated Redemptions. The Fiduciary Clock Started There.

When the exit closes, the governance question becomes unavoidable.

Redemption gating is not a liquidity event. It is a decision architecture event. The moment an institution restricts exit, every prior approval in the chain acquires a new legal character. Most boards have not engineered for that moment.

Read on Substack →
March 2026 · Healthcare

AMR Will Kill More People Than Cancer. The Governance Response Is a Committee.

The decision chain is broken at every layer — and everyone knows it.

Antimicrobial resistance has a five-layer governance failure baked into its architecture: misaligned incentives at discovery, absent rules at prescription, no feedback loop at outcome. The committee that meets quarterly is not the answer to a crisis compounding daily.

Read on Substack →
All Notes on Substack →
03// Decision Autopsies — Real Failures, Real Money
Each autopsy maps to one layer of the DIC™
Autopsy #005 · AI Loans · Retail Banking

640 bad loans. Six months. Every metric green.

AI-driven approvals hit every target it was given. Risk reduction was assumed, not engineered. 640 bad loans became 2,592. The model was accurate. The governance was not.

L1 failure: Risk intent never encoded into decision logic.
Autopsy #002 · Credit Suisse · Strategy

The board approved the strategy. Purpose was not consulted.

Archegos. Greensill. Risk events that cleared every governance stage. The strategy was sound on its own terms. Those terms had drifted from what the institution was actually obligated to protect.

L2 failure: Strategy approved without Purpose reconciliation.
Autopsy #001 · NHS Triage · Healthcare

The algorithm missed the patients nobody told it to find.

NHS triage tools under-referred specific demographic groups. The model performed exactly as designed. The design had not asked who it might systematically miss.

L1 failure: Purpose never defined. Optimisation filled the gap.
More autopsies published as the DIC™ layers progress. All autopsies →
04// SSRN Research — Open Access
Six papers · Eleven eJournals · Top 14% of 2.68M authors
Foundation · Financial Services
The Fiduciary Gap in AI-Driven Financial Institutions
Defines the Fiduciary Gap — the structural distance between what an autonomous system is optimised toward and what the institution is obligated to protect.
Read on SSRN →
Decision Engineering™ · Banking
Decision Integrity in Agentic Retail Banking
Introduces the Decision Integrity Chain™ and the Fiduciary Hurdle Rate as governance mechanisms for programmable institutions.
Read on SSRN →
Institutional Architecture · Financial Services
Reimagining the Future of Banking in a Protocol-Driven World
The structural shift to programmable financial institutions and the Fiduciary Boundaries required to ensure stewardship over algorithmic efficiency.
Read on SSRN →
Decision Architecture · Healthcare
Bridging Fragmented Health Systems
The structural split in modern health systems and the six-part leadership diagnostic to redirect investment toward Decision Integrity.
Read on SSRN →
Behavioural Risk · Banking
When Stable Deposits Stop Being Stable
Treasury automation has turned passive SME deposits into high-velocity, rate-sensitive liquidity pools. A new stability framework based on observed digital behaviour.
Read on SSRN →
Governance Architecture · Sovereign Monetary Policy
137 Countries Are Building CBDCs. Three Things Most Are Not Designing For.
Nigeria's eNaira: 98.5% of wallets unused one year after launch. Not a technology failure — a governance failure.
Read on SSRN →
05// Work with Me
Small number of engagements per year · Direct
01
Decision Drift Audit
10 days · Banking & Healthcare

Maps the distance between what your board mandated and what your institution is actually executing. Most organisations discover the drift has been running 18–36 months before it surfaces as a loss event.

02
Boardroom Simulation
Half-day · Board & C-Suite

A structured decision failure scenario run with your leadership team. Participants identify in real time the DIC™ layers their governance architecture does not cover.

03
Decision Replay Analysis
Bespoke · Post-incident

A forensic reconstruction of a specific institutional decision. Where the chain held, where it broke, and what the architecture should have looked like before the outcome arrived.

The conversation usually starts with a newsletter reply. Subject line: Decision Integrity.

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