The Ledger · 18 entries · dated · changelogged

Every practice, audited

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AWS AI-DLC

EMERGES

A prescriptive workflow for the inner loop and its intent interface — strong mechanics, imported theory.

frameworkengineeringleadershipproductorigin: AWS, 2025upd 2026-06

Auditability

TRANSFORMS

Auditable is a property of the artifact. Audited is a property of somebody's attention — and attention, not transparency, is now the binding constraint.

principleengineeringproductqaleadershiporigin: Accounting controls, by way of explainable AIupd 2026-09

Code review

TRANSFORMS

Line-level inspection drowns at machine volume; intent-and-architecture verification is what review becomes.

practiceengineeringleadershiporigin: Fagan inspections → pull-request cultureupd 2026-07

Offloading the lower cognitive modes frees capacity — or atrophies the higher ones; which one depends on the discipline.

principleengineeringproductleadershiporigin: Bainbridge, 1983 · Bloom, 1956upd 2026-07

Daily standup

TRANSFORMS

Status reporting dies — agents report their own status. Judgment synchronisation is what remains.

practiceengineeringproductleadershiporigin: XP / Scrumupd 2026-06

Executable definitions of correct — the discipline the whole engine turns on.

methodengineeringqaproductorigin: AI-native practice, ~2023 onwardupd 2026-07

Stop prompting agents turn by turn; design the system that runs and grades itself — the writer model is never the one that decides it's done.

methodengineeringleadershiporigin: Addy Osmani, 2026upd 2026-07

The phase dissolves; the instinct gets promoted into evaluation engineering.

practiceqaengineeringorigin: Waterfall-era quality gatesupd 2026-07

The navigator seat is now the job; the agent drives.

practiceengineeringorigin: Extreme Programmingupd 2026-07

From persuasion document to executable intent — the PRD becomes the mesh, or it becomes noise.

artifactproductorigin: Classical product managementupd 2026-09

Scrum

DISSOLVES

Coordination machinery for human-speed teams; the machinery outlives its constraint by habit alone.

frameworkproductengineeringleadershiporigin: Schwaber & Sutherland, 1995upd 2026-06

Estimation rationed scarce hours across a queue. Remove the scarcity and there is nothing left to estimate.

practiceproductengineeringorigin: XP / Scrum traditionupd 2026-06

Tests stop checking the work and start commissioning it — the spec the inner loop executes against.

methodengineeringqaorigin: Kent Beck / XPupd 2026-07

More agents is not more capacity. What decides the economics is whether they share state or hand off — topology, not headcount.

frameworkengineeringproductleadershiporigin: Cao, 2026 — proposed, not inheritedupd 2026-09

A store of claims a human has approved, gating what the machine may assert — and naming everything that goes stale when one is retired.

artifactproductengineeringorigin: Adina Timar, 2026upd 2026-08

Phases were scheduling for scarce specialists. The dependency order survives; the bounded, owned, gated stage does not.

frameworkproductengineeringleadershiporigin: Royce, 1970 — and the misreading of itupd 2026-08
The Two-Speed Engine · from The Product GuyEN-IN · changelog forthcoming · ratio 1 : N